diff --git a/app/controllers/submissions_controller.rb b/app/controllers/submissions_controller.rb
index f10cb1f0..c39e99e5 100644
--- a/app/controllers/submissions_controller.rb
+++ b/app/controllers/submissions_controller.rb
@@ -17,7 +17,7 @@ class SubmissionsController < ApplicationController
     'number' => 'square_number_1', 'image' => 'photo', 'initials' => 'letter_case_upper',
     'file' => 'paperclip', 'select' => 'select', 'checkbox' => 'checkbox', 'radio' => 'circle_dot',
     'stamp' => 'rubber_stamp', 'cells' => 'columns_3', 'multiple' => 'checks', 'phone' => 'phone_check',
-    'payment' => 'credit_card', 'verification' => 'id'
+    'payment' => 'credit_card', 'verification' => 'id', 'kba' => 'user_scan'
   }.freeze
 
   def show
diff --git a/app/javascript/application.js b/app/javascript/application.js
index 86a77b85..4b5988c9 100644
--- a/app/javascript/application.js
+++ b/app/javascript/application.js
@@ -159,6 +159,7 @@ safeRegisterElement('template-builder', class extends HTMLElement {
       locale: this.dataset.locale,
       withPhone: this.dataset.withPhone === 'true',
       withVerification: ['true', 'false'].includes(this.dataset.withVerification) ? this.dataset.withVerification === 'true' : null,
+      withKba: ['true', 'false'].includes(this.dataset.withKba) ? this.dataset.withKba === 'true' : null,
       withLogo: this.dataset.withLogo !== 'false',
       withFieldsDetection: this.dataset.withFieldsDetection === 'true',
       editable: this.dataset.editable !== 'false',
diff --git a/app/javascript/submission_form/area.vue b/app/javascript/submission_form/area.vue
index c39cb16d..1740fe0e 100644
--- a/app/javascript/submission_form/area.vue
+++ b/app/javascript/submission_form/area.vue
@@ -60,6 +60,11 @@
       class="object-contain mx-auto"
       :src="stamp.url"
     >
+    <img
+      v-else-if="field.type === 'kba' && kba"
+      class="object-contain mx-auto"
+      :src="kba.url"
+    >
     <div
       v-else-if="field.type === 'signature' && signature"
       class="flex justify-between h-full gap-1 overflow-hidden w-full"
@@ -272,7 +277,7 @@
 
 <script>
 import MarkdownContent from './markdown_content'
-import { IconTextSize, IconWritingSign, IconCalendarEvent, IconPhoto, IconCheckbox, IconPaperclip, IconSelect, IconCircleDot, IconChecks, IconCheck, IconColumns3, IconPhoneCheck, IconLetterCaseUpper, IconCreditCard, IconRubberStamp, IconSquareNumber1, IconId } from '@tabler/icons-vue'
+import { IconTextSize, IconWritingSign, IconCalendarEvent, IconPhoto, IconCheckbox, IconPaperclip, IconSelect, IconCircleDot, IconChecks, IconCheck, IconColumns3, IconPhoneCheck, IconLetterCaseUpper, IconCreditCard, IconRubberStamp, IconSquareNumber1, IconId, IconUserScan } from '@tabler/icons-vue'
 
 export default {
   name: 'FieldArea',
@@ -391,7 +396,8 @@ export default {
         stamp: this.t('stamp'),
         payment: this.t('payment'),
         phone: this.t('phone'),
-        verification: this.t('verify_id')
+        verification: this.t('verify_id'),
+        kba: this.t('kba')
       }
     },
     strikethroughWidth () {
@@ -454,7 +460,8 @@ export default {
         multiple: IconChecks,
         phone: IconPhoneCheck,
         payment: IconCreditCard,
-        verification: IconId
+        verification: IconId,
+        kba: IconUserScan,
       }
     },
     image () {
@@ -471,6 +478,13 @@ export default {
         return null
       }
     },
+    kba () {
+      if (this.field.type === 'kba') {
+        return this.attachmentsIndex[this.modelValue]
+      } else {
+        return null
+      }
+    },
     signature () {
       if (this.field.type === 'signature') {
         return this.attachmentsIndex[this.modelValue]
diff --git a/app/javascript/submission_form/form.vue b/app/javascript/submission_form/form.vue
index b793d6ae..b5454976 100644
--- a/app/javascript/submission_form/form.vue
+++ b/app/javascript/submission_form/form.vue
@@ -465,6 +465,18 @@
             @focus="scrollIntoField(currentField)"
             @submit="!isSubmitting && submitStep()"
           />
+          <KbaStep
+            v-else-if="currentField.type === 'kba'"
+            ref="currentStep"
+            :key="currentField.uuid"
+            :locale="language?.toLowerCase() || browserLanguage"
+            :submitter="submitter"
+            :empty-value-required-step="emptyValueRequiredStep"
+            :field="currentField"
+            :submitter-slug="submitterSlug"
+            :values="values"
+            @submit="!isSubmitting && submitStep()"
+          />
           <VerificationStep
             v-else-if="currentField.type === 'verification'"
             ref="currentStep"
@@ -480,7 +492,7 @@
           />
         </div>
         <div
-          v-if="(currentField.type !== 'payment' && currentField.type !== 'verification') || submittedValues[currentField.uuid]"
+          v-if="(currentField.type !== 'payment' && currentField.type !== 'verification' && currentField.type !== 'kba') || submittedValues[currentField.uuid]"
           :class="currentField.type === 'signature' ? 'mt-2' : 'mt-4 md:mt-6'"
         >
           <button
@@ -569,6 +581,7 @@ import MultiSelectStep from './multi_select_step'
 import PhoneStep from './phone_step'
 import PaymentStep from './payment_step'
 import VerificationStep from './verification_step'
+import KbaStep from './kba_step'
 import TextStep from './text_step'
 import NumberStep from './number_step'
 import DateStep from './date_step'
@@ -613,6 +626,7 @@ export default {
     AttachmentStep,
     InitialsStep,
     VerificationStep,
+    KbaStep,
     InviteForm,
     MultiSelectStep,
     IconInnerShadowTop,
@@ -1004,7 +1018,7 @@ export default {
       const verificationFields = []
 
       const sortedFields = this.fields.reduce((acc, f) => {
-        if (f.type === 'verification') {
+        if (f.type === 'verification' || f.type === 'kba') {
           verificationFields.push(f)
         } else if (!f.readonly) {
           acc.push(f)
@@ -1401,7 +1415,7 @@ export default {
 
       const submitStep = this.currentStep
 
-      const stepPromise = ['signature', 'phone', 'initials', 'payment', 'verification'].includes(this.currentField.type)
+      const stepPromise = ['signature', 'phone', 'initials', 'payment', 'verification', 'kba'].includes(this.currentField.type)
         ? this.$refs.currentStep.submit
         : () => Promise.resolve({})
 
diff --git a/app/javascript/submission_form/i18n.js b/app/javascript/submission_form/i18n.js
index d045eb3a..70567992 100644
--- a/app/javascript/submission_form/i18n.js
+++ b/app/javascript/submission_form/i18n.js
@@ -1,4 +1,5 @@
 const en = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Please upload an image file',
   must_be_characters_length: 'Must be {number} characters length',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Complete all required fields to proceed with identity verification.',
@@ -100,6 +101,7 @@ const en = {
 }
 
 const es = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Por favor, sube un archivo de imagen',
   must_be_characters_length: 'Debe tener {number} caracteres de longitud',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Complete todos los campos requeridos para continuar con la verificación de identidad.',
@@ -201,6 +203,7 @@ const es = {
 }
 
 const it = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Per favore carica un file immagine',
   must_be_characters_length: 'Deve essere lungo {number} caratteri',
   complete_all_required_fields_to_proceed_with_identity_verification: "Compila tutti i campi obbligatori per procedere con la verifica dell'identità.",
@@ -302,6 +305,7 @@ const it = {
 }
 
 const de = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Bitte laden Sie eine Bilddatei hoch',
   must_be_characters_length: 'Muss {number} Zeichen lang sein',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Füllen Sie alle Pflichtfelder aus, um mit der Identitätsprüfung fortzufahren.',
@@ -403,6 +407,7 @@ const de = {
 }
 
 const fr = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Veuillez téléverser un fichier image',
   must_be_characters_length: 'Doit comporter {number} caractères',
   complete_all_required_fields_to_proceed_with_identity_verification: "Veuillez remplir tous les champs obligatoires pour poursuivre la vérification d'identité.",
@@ -504,6 +509,7 @@ const fr = {
 }
 
 const pl = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Proszę przesłać plik obrazu',
   must_be_characters_length: 'Musi mieć długość {number} znaków',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Uzupełnij wszystkie wymagane pola, aby kontynuować weryfikację tożsamości.',
@@ -605,6 +611,7 @@ const pl = {
 }
 
 const uk = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Будь ласка, завантажте файл зображення',
   must_be_characters_length: 'Має містити {number} символів',
   complete_all_required_fields_to_proceed_with_identity_verification: "Заповніть всі обов'язкові поля, щоб продовжити перевірку особи.",
@@ -706,6 +713,7 @@ const uk = {
 }
 
 const cs = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Nahrajte prosím obrázkový soubor',
   must_be_characters_length: 'Musí mít délku {number} znaků',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Vyplňte všechna povinná pole, abyste mohli pokračovat v ověření identity.',
@@ -807,6 +815,7 @@ const cs = {
 }
 
 const pt = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Por favor, envie um arquivo de imagem',
   must_be_characters_length: 'Deve ter {number} caracteres',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Preencha todos os campos obrigatórios para prosseguir com a verificação de identidade.',
@@ -908,6 +917,7 @@ const pt = {
 }
 
 const he = {
+  kba: 'KBA',
   please_upload_an_image_file: 'אנא העלה קובץ תמונה',
   must_be_characters_length: 'חייב להיות באורך של {number} תווים',
   complete_all_required_fields_to_proceed_with_identity_verification: 'מלא את כל השדות הנדרשים כדי להמשיך עם אימות זהות.',
@@ -1009,6 +1019,7 @@ const he = {
 }
 
 const nl = {
+  kba: 'KBA',
   please_upload_an_image_file: 'Upload alstublieft een afbeeldingsbestand',
   must_be_characters_length: 'Moet {number} tekens lang zijn',
   complete_all_required_fields_to_proceed_with_identity_verification: 'Vul alle verplichte velden in om door te gaan met de identiteitsverificatie.',
@@ -1110,6 +1121,7 @@ const nl = {
 }
 
 const ar = {
+  kba: 'KBA',
   please_upload_an_image_file: 'يرجى تحميل ملف صورة',
   must_be_characters_length: 'يجب أن يكون الطول {number} حرفًا',
   complete_all_required_fields_to_proceed_with_identity_verification: 'أكمل جميع الحقول المطلوبة للمتابعة في التحقق من الهوية.',
@@ -1211,6 +1223,7 @@ const ar = {
 }
 
 const ko = {
+  kba: 'KBA',
   please_upload_an_image_file: '이미지 파일을 업로드해 주세요',
   must_be_characters_length: '{number}자여야 합니다',
   complete_all_required_fields_to_proceed_with_identity_verification: '신원 확인을 진행하려면 모든 필수 필드를 작성하십시오.',
@@ -1312,6 +1325,7 @@ const ko = {
 }
 
 const ja = {
+  kba: 'KBA',
   please_upload_an_image_file: '画像ファイルをアップロードしてください',
   must_be_characters_length: '{number}文字でなければなりません',
   complete_all_required_fields_to_proceed_with_identity_verification: '本人確認を進めるには、すべての必須項目を入力してください。',
diff --git a/app/javascript/submission_form/kba_step.vue b/app/javascript/submission_form/kba_step.vue
new file mode 100644
index 00000000..0d504658
--- /dev/null
+++ b/app/javascript/submission_form/kba_step.vue
@@ -0,0 +1,490 @@
+<template>
+  <label
+    v-if="!error"
+    class="label text-xl sm:text-2xl py-0 mb-2 sm:mb-3.5 field-name-label"
+  >
+    <MarkdownContent
+      v-if="field.title"
+      :string="field.title"
+    />
+    <template v-else>{{ field.name || 'Knowledge Based Authentication' }}</template>
+    <span
+      v-if="questions"
+      class="float-right text-base font-normal text-neutral-500 mt-1 whitespace-nowrap"
+    >
+      Question {{ currentQuestionIndex + 1 }} / {{ questions.length }}
+    </span>
+  </label>
+  <div
+    v-if="field.description"
+    dir="auto"
+    class="mb-4 px-1 field-description-text"
+  >
+    <MarkdownContent :string="field.description" />
+  </div>
+  <div
+    v-if="error"
+    class="mb-4 text-center"
+  >
+    <div class="text-xl mb-4">
+      {{ error }}
+    </div>
+    <button
+      class="base-button w-full flex justify-center submit-form-button"
+      @click="restartKba"
+    >
+      {{ questions ? 'Restart KBA' : 'Retry' }}
+    </button>
+  </div>
+  <div
+    v-if="isLoading"
+    class="w-full flex space-x-2 justify-center mb-2"
+  >
+    <IconInnerShadowTop
+      width="40"
+      class="animate-spin h-10"
+    />
+  </div>
+  <div v-else-if="questions && !error">
+    <form @submit.prevent="nextQuestion">
+      <div class="mb-6 px-1">
+        <p class="font-semibold mb-4 text-lg">{{ currentQuestion.prompt }}</p>
+        <div class="space-y-3.5 mx-auto">
+          <div
+            v-for="(answer, index) in currentQuestion.answers"
+            :key="answer.text"
+          >
+            <label
+              :for="`${currentQuestion.id}_${answer.text}`"
+              class="flex items-center space-x-3 radio-label"
+            >
+              <input
+                :id="`${currentQuestion.id}_${answer.text}`"
+                v-model="answers[currentQuestion.id]"
+                type="radio"
+                :name="currentQuestion.id"
+                :value="answer.text"
+                class="base-radio !h-7 !w-7"
+                required
+              >
+              <span class="text-xl">{{ answer.text }}</span>
+            </label>
+          </div>
+        </div>
+      </div>
+      <div class="mt-6">
+        <button
+          type="submit"
+          class="base-button w-full flex justify-center submit-form-button"
+          :disabled="isSubmitting || !answers[currentQuestion.id]"
+        >
+          <span class="flex">
+            <IconInnerShadowTop
+              v-if="isSubmitting"
+              class="mr-1 animate-spin"
+            />
+            <span>
+              {{ isLastQuestion ? (isSubmitting ? t('submitting_') : t('complete')) : t('next') }}
+            </span><span
+              v-if="isSubmitting"
+              class="w-6 flex justify-start mr-1"
+            ><span>...</span></span>
+          </span>
+        </button>
+      </div>
+    </form>
+  </div>
+  <div v-else-if="!error">
+    <form @submit.prevent="startKba">
+      <div class="grid grid-cols-6 gap-x-2 md:gap-x-4 md:gap-y-2 mb-4">
+        <div class="col-span-3">
+          <label
+            for="kba_fn"
+            class="label text-sm md:text-base"
+          >First Name</label>
+          <input
+            id="kba_fn"
+            v-model="form.fn"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-3">
+          <label
+            for="kba_ln"
+            class="label text-sm md:text-base"
+          >Last Name</label>
+          <input
+            id="kba_ln"
+            v-model="form.ln"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-6">
+          <label
+            for="kba_addr"
+            class="label text-sm md:text-base"
+          >Address</label>
+          <input
+            id="kba_addr"
+            v-model="form.addr"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-2">
+          <label
+            for="kba_city"
+            class="label text-sm md:text-base"
+          >City</label>
+          <input
+            id="kba_city"
+            v-model="form.city"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-2">
+          <label
+            for="kba_state"
+            class="label text-sm md:text-base"
+          >State</label>
+          <select
+            id="kba_state"
+            v-model="form.state"
+            class="select select-bordered !h-10 min-h-[2.5rem] w-full bg-white font-normal !text-base"
+            required
+          >
+            <option
+              value=""
+              disabled
+            >
+              Select State
+            </option>
+            <option
+              v-for="state in states"
+              :key="state.code"
+              :value="state.code"
+            >
+              {{ state.name }}
+            </option>
+          </select>
+        </div>
+        <div class="col-span-2">
+          <label
+            for="kba_zip"
+            class="label text-sm md:text-base"
+          >Zip</label>
+          <input
+            id="kba_zip"
+            v-model="form.zip"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-3">
+          <label
+            for="kba_phone"
+            class="label text-sm md:text-base"
+          >Phone</label>
+          <input
+            id="kba_phone"
+            v-model="form.phone"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-3">
+          <label
+            for="kba_email"
+            class="label text-sm md:text-base"
+          >Email</label>
+          <input
+            id="kba_email"
+            v-model="form.email"
+            type="email"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-3">
+          <label
+            for="kba_dob"
+            class="label text-sm md:text-base"
+          >DOB</label>
+          <input
+            id="kba_dob"
+            v-model="form.dob"
+            type="date"
+            class="input input-bordered !h-10 md:w-full bg-white"
+            required
+          >
+        </div>
+        <div class="col-span-3">
+          <label
+            for="kba_ssn"
+            class="label text-sm md:text-base"
+          >SSN</label>
+          <input
+            id="kba_ssn"
+            v-model="form.ssn"
+            type="text"
+            class="input input-bordered !h-10 w-full bg-white"
+            required
+          >
+        </div>
+      </div>
+      <div class="mt-6">
+        <button
+          type="submit"
+          class="base-button w-full flex justify-center submit-form-button"
+          :disabled="isLoading"
+        >
+          <span class="flex">
+            <IconInnerShadowTop
+              v-if="isLoading"
+              class="mr-1 animate-spin"
+            />
+            <span>
+              {{ isLoading ? 'Loading...' : 'Start Verification' }}
+            </span><span
+              v-if="isLoading"
+              class="w-6 flex justify-start mr-1"
+            ><span>...</span></span>
+          </span>
+        </button>
+      </div>
+    </form>
+  </div>
+</template>
+
+<script>
+import MarkdownContent from './markdown_content'
+import { IconInnerShadowTop } from '@tabler/icons-vue'
+
+export default {
+  name: 'KbaStep',
+  components: {
+    MarkdownContent,
+    IconInnerShadowTop
+  },
+  inject: ['baseUrl', 't'],
+  props: {
+    field: {
+      type: Object,
+      required: true
+    },
+    submitterSlug: {
+      type: String,
+      required: true
+    },
+    values: {
+      type: Object,
+      required: true
+    }
+  },
+  emits: ['submit'],
+  data () {
+    return {
+      isLoading: false,
+      isSubmitting: false,
+      questions: null,
+      currentQuestionIndex: 0,
+      token: null,
+      answers: {},
+      error: null,
+      form: {
+        fn: '',
+        ln: '',
+        addr: '',
+        city: '',
+        state: '',
+        zip: '',
+        dob: '',
+        ssn: '',
+        phone: '',
+        email: ''
+      }
+    }
+  },
+  computed: {
+    currentQuestion () {
+      return this.questions ? this.questions[this.currentQuestionIndex] : null
+    },
+    states () {
+      return [
+        { code: 'AL', name: 'Alabama' },
+        { code: 'AK', name: 'Alaska' },
+        { code: 'AZ', name: 'Arizona' },
+        { code: 'AR', name: 'Arkansas' },
+        { code: 'CA', name: 'California' },
+        { code: 'CO', name: 'Colorado' },
+        { code: 'CT', name: 'Connecticut' },
+        { code: 'DE', name: 'Delaware' },
+        { code: 'DC', name: 'District of Columbia' },
+        { code: 'FL', name: 'Florida' },
+        { code: 'GA', name: 'Georgia' },
+        { code: 'HI', name: 'Hawaii' },
+        { code: 'ID', name: 'Idaho' },
+        { code: 'IL', name: 'Illinois' },
+        { code: 'IN', name: 'Indiana' },
+        { code: 'IA', name: 'Iowa' },
+        { code: 'KS', name: 'Kansas' },
+        { code: 'KY', name: 'Kentucky' },
+        { code: 'LA', name: 'Louisiana' },
+        { code: 'ME', name: 'Maine' },
+        { code: 'MD', name: 'Maryland' },
+        { code: 'MA', name: 'Massachusetts' },
+        { code: 'MI', name: 'Michigan' },
+        { code: 'MN', name: 'Minnesota' },
+        { code: 'MS', name: 'Mississippi' },
+        { code: 'MO', name: 'Missouri' },
+        { code: 'MT', name: 'Montana' },
+        { code: 'NE', name: 'Nebraska' },
+        { code: 'NV', name: 'Nevada' },
+        { code: 'NH', name: 'New Hampshire' },
+        { code: 'NJ', name: 'New Jersey' },
+        { code: 'NM', name: 'New Mexico' },
+        { code: 'NY', name: 'New York' },
+        { code: 'NC', name: 'North Carolina' },
+        { code: 'ND', name: 'North Dakota' },
+        { code: 'OH', name: 'Ohio' },
+        { code: 'OK', name: 'Oklahoma' },
+        { code: 'OR', name: 'Oregon' },
+        { code: 'PA', name: 'Pennsylvania' },
+        { code: 'RI', name: 'Rhode Island' },
+        { code: 'SC', name: 'South Carolina' },
+        { code: 'SD', name: 'South Dakota' },
+        { code: 'TN', name: 'Tennessee' },
+        { code: 'TX', name: 'Texas' },
+        { code: 'UT', name: 'Utah' },
+        { code: 'VT', name: 'Vermont' },
+        { code: 'VA', name: 'Virginia' },
+        { code: 'WA', name: 'Washington' },
+        { code: 'WV', name: 'West Virginia' },
+        { code: 'WI', name: 'Wisconsin' },
+        { code: 'WY', name: 'Wyoming' }
+      ]
+    },
+    isLastQuestion () {
+      return this.questions && this.currentQuestionIndex === this.questions.length - 1
+    }
+  },
+  methods: {
+    nextQuestion () {
+      if (this.isLastQuestion) {
+        this.$emit('submit')
+      } else {
+        this.currentQuestionIndex++
+      }
+    },
+    restartKba () {
+      this.questions = null
+      this.token = null
+      this.answers = {}
+      this.currentQuestionIndex = 0
+      this.error = null
+    },
+    async startKba () {
+      this.isLoading = true
+      this.error = null
+
+      try {
+        const payload = { ...this.form, submitter_slug: this.submitterSlug }
+
+        if (payload.dob) {
+          payload.dob = payload.dob.replace(/-/g, '')
+        }
+
+        if (payload.ssn) {
+          payload.ssn = payload.ssn.replace(/\D/g, '')
+        }
+
+        if (payload.phone) {
+          payload.phone = payload.phone.replace(/^\+1/, '')
+        }
+
+        const resp = await fetch(this.baseUrl + '/api/kba', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(payload)
+        })
+
+        if (!resp.ok) throw new Error('Failed to start KBA')
+
+        const data = await resp.json()
+
+        if (data.result && data.result.action === 'FAIL') {
+          if (data.result.detail === 'NO MATCH') {
+            throw new Error('Unfortunately, we were unable to start Knowledge Based Authentication with the details provided. Please review and confirm that all your personal details are correct.')
+          }
+
+          throw new Error(data.result.detail || 'KBA Start Failed')
+        }
+
+        if (data.output && data.output.questions && data.output.questions.questions) {
+          this.questions = data.output.questions.questions
+          this.token = data.continuations.questions.template.token
+
+          this.questions.forEach(q => {
+            this.answers[q.id] = null
+          })
+        } else {
+          throw new Error('Invalid KBA response')
+        }
+      } catch (e) {
+        this.error = e.message
+      } finally {
+        this.isLoading = false
+      }
+    },
+    async submit () {
+      this.isSubmitting = true
+      this.error = null
+
+      const formattedAnswers = Object.keys(this.answers).reduce((acc, key) => {
+        acc[key] = [this.answers[key]]
+
+        return acc
+      }, {})
+
+      try {
+        const resp = await fetch(this.baseUrl + `/api/kba/${this.field.uuid}`, {
+          method: 'PUT',
+          body: JSON.stringify({
+            token: this.token,
+            answers: formattedAnswers,
+            submitter_slug: this.submitterSlug
+          }),
+          headers: { 'Content-Type': 'application/json' }
+        })
+
+        const data = await resp.json()
+
+        if (data.result?.action !== 'PASS') {
+          this.error = 'Knowledge Based Authentication Failed - make sure you provide correct answers for the Knowledge Based authentication.'
+
+          throw new Error('Knowledge Based Authentication Failed')
+        }
+
+        if (!resp.ok) {
+          this.error = 'Failed to submit answers'
+
+          throw new Error('Failed to submit answers')
+        }
+
+        return resp
+      } finally {
+        this.isSubmitting = false
+      }
+    }
+  }
+}
+</script>
diff --git a/app/javascript/template_builder/builder.vue b/app/javascript/template_builder/builder.vue
index 76826eb5..8a09371b 100644
--- a/app/javascript/template_builder/builder.vue
+++ b/app/javascript/template_builder/builder.vue
@@ -583,6 +583,7 @@ export default {
       backgroundColor: this.backgroundColor,
       withPhone: this.withPhone,
       withVerification: this.withVerification,
+      withKba: this.withKba,
       withPayment: this.withPayment,
       isPaymentConnected: this.isPaymentConnected,
       withFormula: this.withFormula,
@@ -794,6 +795,11 @@ export default {
       required: false,
       default: null
     },
+    withKba: {
+      type: Boolean,
+      required: false,
+      default: null
+    },
     withPayment: {
       type: Boolean,
       required: false,
@@ -1482,7 +1488,7 @@ export default {
       } else if (type === 'image') {
         area.w = pageMask.clientWidth / 5 / pageMask.clientWidth
         area.h = (pageMask.clientWidth / 5 / pageMask.clientWidth) * (pageMask.clientWidth / pageMask.clientHeight)
-      } else if (type === 'signature' || type === 'stamp' || type === 'verification') {
+      } else if (type === 'signature' || type === 'stamp' || type === 'verification' || type === 'kba') {
         area.w = pageMask.clientWidth / 5 / pageMask.clientWidth
         area.h = (pageMask.clientWidth / 5 / pageMask.clientWidth) * (pageMask.clientWidth / pageMask.clientHeight) / 2
       } else if (type === 'initials') {
@@ -1717,7 +1723,7 @@ export default {
             w: area.maskW / 5 / area.maskW,
             h: (area.maskW / 5 / area.maskW) * (area.maskW / area.maskH)
           }
-        } else if (fieldType === 'signature' || fieldType === 'stamp' || fieldType === 'verification') {
+        } else if (fieldType === 'signature' || fieldType === 'stamp' || fieldType === 'verification' || fieldType === 'kba') {
           baseArea = {
             w: area.maskW / 5 / area.maskW,
             h: (area.maskW / 5 / area.maskW) * (area.maskW / area.maskH) / 2
diff --git a/app/javascript/template_builder/field_type.vue b/app/javascript/template_builder/field_type.vue
index b024e0d1..cc5777e2 100644
--- a/app/javascript/template_builder/field_type.vue
+++ b/app/javascript/template_builder/field_type.vue
@@ -30,7 +30,7 @@
         v-for="(icon, type) in fieldIconsSorted"
         :key="type"
       >
-        <li v-if="fieldTypes.includes(type) || ((withPhone || type != 'phone') && (withPayment || type != 'payment') && (withVerification || type != 'verification'))">
+        <li v-if="fieldTypes.includes(type) || ((withPhone || type != 'phone') && (withPayment || type != 'payment') && (withVerification || type != 'verification') || (withKba || type != 'kba'))">
           <a
             href="#"
             class="text-sm py-1 px-2"
@@ -51,11 +51,11 @@
 </template>
 
 <script>
-import { IconTextSize, IconWritingSign, IconCalendarEvent, IconPhoto, IconCheckbox, IconPaperclip, IconSelect, IconCircleDot, IconChecks, IconColumns3, IconPhoneCheck, IconLetterCaseUpper, IconCreditCard, IconRubberStamp, IconSquareNumber1, IconHeading, IconId, IconCalendarCheck, IconStrikethrough } from '@tabler/icons-vue'
+import { IconTextSize, IconWritingSign, IconCalendarEvent, IconPhoto, IconCheckbox, IconPaperclip, IconSelect, IconCircleDot, IconChecks, IconColumns3, IconPhoneCheck, IconLetterCaseUpper, IconCreditCard, IconRubberStamp, IconSquareNumber1, IconHeading, IconId, IconCalendarCheck, IconStrikethrough, IconUserScan } from '@tabler/icons-vue'
 
 export default {
   name: 'FiledTypeDropdown',
-  inject: ['withPhone', 'withPayment', 'withVerification', 't', 'fieldTypes'],
+  inject: ['withPhone', 'withPayment', 'withVerification', 'withKba', 't', 'fieldTypes'],
   props: {
     modelValue: {
       type: String,
@@ -114,7 +114,8 @@ export default {
         stamp: this.t('stamp'),
         payment: this.t('payment'),
         phone: this.t('phone'),
-        verification: this.t('verify_id')
+        verification: this.t('verify_id'),
+        kba: this.t('kba')
       }
     },
     fieldLabels () {
@@ -134,7 +135,8 @@ export default {
         stamp: this.t('stamp_field'),
         payment: this.t('payment_field'),
         phone: this.t('phone_field'),
-        verification: this.t('verify_id')
+        verification: this.t('verify_id'),
+        kba: this.t('kba')
       }
     },
     fieldIcons () {
@@ -157,7 +159,8 @@ export default {
         stamp: IconRubberStamp,
         payment: IconCreditCard,
         phone: IconPhoneCheck,
-        verification: IconId
+        verification: IconId,
+        kba: IconUserScan,
       }
     },
     skipTypes () {
diff --git a/app/javascript/template_builder/fields.vue b/app/javascript/template_builder/fields.vue
index 20c33a3a..69591712 100644
--- a/app/javascript/template_builder/fields.vue
+++ b/app/javascript/template_builder/fields.vue
@@ -114,7 +114,7 @@
       :key="type"
     >
       <button
-        v-if="fieldTypes.includes(type) || ((withPhone || type != 'phone') && (withPayment || type != 'payment') && (withVerification || type != 'verification'))"
+        v-if="fieldTypes.includes(type) || ((withPhone || type != 'phone') && (withPayment || type != 'payment') && (withVerification || type != 'verification') && (withKba || type != 'kba'))"
         :id="`${type}_type_field_button`"
         draggable="true"
         class="field-type-button group flex items-center justify-center border border-dashed w-full rounded relative fields-grid-item"
@@ -122,7 +122,7 @@
         :class="drawFieldType === type ? 'border-base-content/40' : 'border-base-300 hover:border-base-content/20'"
         @dragstart="onDragstart($event, { type: type })"
         @dragend="$emit('drag-end')"
-        @click="['file', 'payment', 'verification'].includes(type) ? $emit('add-field', type) : $emit('set-draw-type', type)"
+        @click="['file', 'payment', 'verification', 'kba'].includes(type) ? $emit('add-field', type) : $emit('set-draw-type', type)"
       >
         <div
           class="flex items-console transition-all cursor-grab h-full absolute left-0"
@@ -283,7 +283,7 @@ export default {
     IconDrag,
     IconLock
   },
-  inject: ['save', 'backgroundColor', 'withPhone', 'withVerification', 'withPayment', 't', 'fieldsDragFieldRef', 'baseFetch'],
+  inject: ['save', 'backgroundColor', 'withPhone', 'withVerification', 'withKba', 'withPayment', 't', 'fieldsDragFieldRef', 'baseFetch'],
   props: {
     fields: {
       type: Array,
diff --git a/app/javascript/template_builder/i18n.js b/app/javascript/template_builder/i18n.js
index ef97059d..5cbc6a19 100644
--- a/app/javascript/template_builder/i18n.js
+++ b/app/javascript/template_builder/i18n.js
@@ -1,4 +1,5 @@
 const en = {
+  kba: 'KBA',
   analyzing_: 'Analyzing...',
   download: 'Download',
   downloading_: 'Downloading...',
@@ -188,6 +189,7 @@ const en = {
 }
 
 const es = {
+  kba: 'KBA',
   autodetect_fields: 'Autodetectar campos',
   analyzing_: 'Analizando...',
   download: 'Descargar',
@@ -377,6 +379,7 @@ const es = {
 }
 
 const it = {
+  kba: 'KBA',
   autodetect_fields: 'Rileva campi',
   analyzing_: 'Analisi...',
   download: 'Scarica',
@@ -566,6 +569,7 @@ const it = {
 }
 
 const pt = {
+  kba: 'KBA',
   autodetect_fields: 'Detectar campos',
   analyzing_: 'Analisando...',
   download: 'Baixar',
@@ -755,6 +759,7 @@ const pt = {
 }
 
 const fr = {
+  kba: 'KBA',
   autodetect_fields: 'Détecter les champs',
   analyzing_: 'Analyse...',
   download: 'Télécharger',
@@ -944,6 +949,7 @@ const fr = {
 }
 
 const de = {
+  kba: 'KBA',
   autodetect_fields: 'Felder erkennen',
   analyzing_: 'Analysiere...',
   download: 'Download',
@@ -1133,6 +1139,7 @@ const de = {
 }
 
 const nl = {
+  kba: 'KBA',
   autodetect_fields: 'Velden detecteren',
   analyzing_: 'Analyseren...',
   download: 'Downloaden',
diff --git a/app/javascript/template_builder/mobile_fields.vue b/app/javascript/template_builder/mobile_fields.vue
index bc88491d..e0e51a88 100644
--- a/app/javascript/template_builder/mobile_fields.vue
+++ b/app/javascript/template_builder/mobile_fields.vue
@@ -59,7 +59,7 @@
           v-for="(icon, type) in fieldIconsSorted"
           :key="type"
         >
-          <li v-if="fieldTypes.includes(type) || ((withPhone || type != 'phone') && (withPayment || type != 'payment') && (withVerification || type != 'verification'))">
+          <li v-if="fieldTypes.includes(type) || ((withPhone || type != 'phone') && (withPayment || type != 'payment') && (withVerification || type != 'verification') && (withKba || type != 'kba'))">
             <a
               href="#"
               class="text-sm py-1 px-2"
@@ -89,7 +89,7 @@ export default {
     IconPlus,
     IconX
   },
-  inject: ['withPhone', 'withPayment', 'withVerification', 'backgroundColor', 't'],
+  inject: ['withPhone', 'withPayment', 'withVerification', 'withKba', 'backgroundColor', 't'],
   props: {
     modelValue: {
       type: String,
diff --git a/app/jobs/process_submitter_completion_job.rb b/app/jobs/process_submitter_completion_job.rb
index a3cdf6f2..68d09c53 100644
--- a/app/jobs/process_submitter_completion_job.rb
+++ b/app/jobs/process_submitter_completion_job.rb
@@ -40,10 +40,17 @@ class ProcessSubmitterCompletionJob
 
     complete_verification_events, sms_events =
       submitter.submission_events.where(event_type: %i[send_sms send_2fa_sms complete_verification])
-               .partition { |e| e.event_type == 'complete_verification' }
+               .partition { |e| e.event_type == 'complete_verification' || e.event_type == 'complete_kba' }
 
     complete_verification_event = complete_verification_events.first
 
+    verification_method =
+      if complete_verification_event&.event_type == 'complete_kba'
+        'kba'
+      elsif complete_verification_event
+        complete_verification_event.data['method']
+      end
+
     completed_submitter.assign_attributes(
       submission_id: submitter.submission_id,
       account_id: submission.account_id,
@@ -51,7 +58,7 @@ class ProcessSubmitterCompletionJob
       template_id: submission.template_id,
       source: submission.source,
       sms_count: sms_events.sum { |e| e.data['segments'] || 1 },
-      verification_method: complete_verification_event&.data&.dig('method'),
+      verification_method:,
       completed_at: submitter.completed_at
     )
 
diff --git a/app/models/submission_event.rb b/app/models/submission_event.rb
index 8dc44547..a112660a 100644
--- a/app/models/submission_event.rb
+++ b/app/models/submission_event.rb
@@ -56,7 +56,9 @@ class SubmissionEvent < ApplicationRecord
     email_verified: 'email_verified',
     start_form: 'start_form',
     start_verification: 'start_verification',
-    complete_verification: 'complete_verification',
+    start_kba: 'start_kba',
+    complete_kba: 'complete_kba',
+    fail_kba: 'fail_kba',
     view_form: 'view_form',
     invite_party: 'invite_party',
     complete_form: 'complete_form',
diff --git a/app/views/icons/_user_scan.html.erb b/app/views/icons/_user_scan.html.erb
new file mode 100644
index 00000000..fca58673
--- /dev/null
+++ b/app/views/icons/_user_scan.html.erb
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" class="<%= local_assigns[:class] %>" width="44" height="44" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <path stroke="none" d="M0 0h24v24H0z" fill="none" /><path d="M10 9a2 2 0 1 0 4 0a2 2 0 0 0 -4 0" /><path d="M4 8v-2a2 2 0 0 1 2 -2h2" /><path d="M4 16v2a2 2 0 0 0 2 2h2" /><path d="M16 4h2a2 2 0 0 1 2 2v2" /><path d="M16 20h2a2 2 0 0 0 2 -2v-2" /><path d="M8 16a2 2 0 0 1 2 -2h4a2 2 0 0 1 2 2" />
+</svg>
diff --git a/app/views/submissions/_value.html.erb b/app/views/submissions/_value.html.erb
index 4213d728..d9939fc7 100644
--- a/app/views/submissions/_value.html.erb
+++ b/app/views/submissions/_value.html.erb
@@ -33,7 +33,7 @@
         </div>
       <% end %>
     </div>
-  <% elsif field['type'].in?(['image', 'initials', 'stamp']) && attachments_index[value].image? %>
+  <% elsif field['type'].in?(['image', 'initials', 'stamp', 'kba']) && attachments_index[value].image? %>
     <img class="object-contain mx-auto" src="<%= attachments_index[value].url %>" loading="lazy">
   <% elsif field['type'].in?(['file', 'payment', 'image']) %>
     <autosize-field></autosize-field>
diff --git a/app/views/submissions/show.html.erb b/app/views/submissions/show.html.erb
index 80ff697f..51dfa59c 100644
--- a/app/views/submissions/show.html.erb
+++ b/app/views/submissions/show.html.erb
@@ -262,7 +262,7 @@
                   <div class="w-full bg-base-300 py-1">
                     <img class="object-contain mx-auto" style="max-height: <%= field['type'] == 'signature' ? 100 : 50 %>px" height="<%= attachments_index[value].metadata['height'] %>" width="<%= attachments_index[value].metadata['width'] %>" src="<%= attachments_index[value].url %>" loading="lazy">
                   </div>
-                <% elsif field['type'].in?(['image', 'stamp']) && attachments_index[value].image? %>
+                <% elsif field['type'].in?(['image', 'stamp', 'kba']) && attachments_index[value].image? %>
                   <img class="object-contain mx-auto max-h-28" style="max-height: 200px" height="<%= attachments_index[value].metadata['height'] %>" width="<%= attachments_index[value].metadata['width'] %>" src="<%= attachments_index[value].url %>" loading="lazy">
                 <% elsif field['type'].in?(['file', 'payment', 'image']) %>
                   <div class="flex flex-col justify-center">
diff --git a/config/locales/i18n.yml b/config/locales/i18n.yml
index 75380e85..6a399d1a 100644
--- a/config/locales/i18n.yml
+++ b/config/locales/i18n.yml
@@ -677,6 +677,9 @@ en: &en
   payment_field: Payment Field
   phone_field: Phone Field
   verification_field: Identity Verification
+  knowledge_based_authentication: Knowledge Based Authentication
+  kba_field: KBA
+  passed: Passed
   identity_verification: Identity verification
   paid_price: 'Paid %{price}'
   verified: Verified
@@ -910,6 +913,9 @@ en: &en
     complete_form_by_html: '<b>Submission completed</b> by %{submitter_name}'
     start_verification_by_html: '<b>Identity verification started</b> by %{submitter_name}'
     complete_verification_by_html: '<b>Identity verification completed</b> by %{submitter_name} with %{provider}'
+    start_kba_by_html: '<b>KBA started</b> by %{submitter_name}'
+    complete_kba_by_html: '<b>KBA completed</b> by %{submitter_name}'
+    fail_kba_by_html: '<b>KBA failed</b> by %{submitter_name}'
     api_complete_form_by_html: '<b>Submission completed via API</b> by %{submitter_name}'
   import_list:
     select_worksheet: Select Worksheet
@@ -992,6 +998,9 @@ en: &en
       range_without_total: "%{from}-%{to} events"
 
 es: &es
+  knowledge_based_authentication: Autenticación basada en el conocimiento
+  kba_field: KBA
+  passed: Aprobado
   templates_that_require_email_or_phone_2fa_cannot_be_used_via_a_shared_link: Las plantillas que requieren autenticación en dos pasos por correo electrónico o teléfono no se pueden usar mediante un enlace compartido.
   make_owner: Hacer propietario
   billing: Facturación
@@ -1883,6 +1892,9 @@ es: &es
     api_complete_form_by_html: '<b>Envío completado vía API</b> por %{submitter_name}'
     start_verification_by_html: '<b>Verificación de identidad iniciada</b> por %{submitter_name}'
     complete_verification_by_html: '<b>Verificación de identidad completada</b> por %{submitter_name} con %{provider}'
+    start_kba_by_html: '<b>KBA iniciado</b> por %{submitter_name}'
+    complete_kba_by_html: '<b>KBA completado</b> por %{submitter_name}'
+    fail_kba_by_html: '<b>KBA fallido</b> por %{submitter_name}'
   import_list:
     select_worksheet: Seleccionar hoja de cálculo
     open: Abrir
@@ -1964,6 +1976,9 @@ es: &es
       range_without_total: "%{from}-%{to} eventos"
 
 it: &it
+  knowledge_based_authentication: Autenticazione basata sulla conoscenza
+  kba_field: KBA
+  passed: Superato
   templates_that_require_email_or_phone_2fa_cannot_be_used_via_a_shared_link: I modelli che richiedono 2FA via email o telefono non possono essere utilizzati tramite un link condiviso.
   make_owner: Rendi proprietario
   billing: Fatturazione
@@ -2856,6 +2871,9 @@ it: &it
     api_complete_form_by_html: '<b>Invio completato tramite API</b> da %{submitter_name}'
     start_verification_by_html: "<b>Verifica dell'identità iniziata</b> da %{submitter_name}"
     complete_verification_by_html: "<b>Verifica dell'identità completata</b> da %{submitter_name} con %{provider}"
+    start_kba_by_html: "<b>KBA avviata</b> da %{submitter_name}"
+    complete_kba_by_html: "<b>KBA completata</b> da %{submitter_name}"
+    fail_kba_by_html: "<b>KBA non riuscita</b> da %{submitter_name}"
   import_list:
     select_worksheet: Seleziona il foglio di lavoro
     open: Apri
@@ -2937,6 +2955,9 @@ it: &it
       range_without_total: "%{from}-%{to} eventi"
 
 fr: &fr
+  knowledge_based_authentication: Authentification basée sur la connaissance
+  kba_field: KBA
+  passed: Réussi
   templates_that_require_email_or_phone_2fa_cannot_be_used_via_a_shared_link: Les modèles nécessitant une authentification à deux facteurs par e-mail ou téléphone ne peuvent pas être utilisés via un lien partagé.
   make_owner: Rendre propriétaire
   billing: Facturation
@@ -3825,6 +3846,9 @@ fr: &fr
     start_verification_by_html: "<b>Vérification d’identité démarrée</b> par %{submitter_name}"
     complete_verification_by_html: "<b>Vérification d’identité terminée</b> par %{submitter_name} avec %{provider}"
     api_complete_form_by_html: "<b>Soumission terminée via API</b> par %{submitter_name}"
+    start_kba_by_html: "<b>KBA démarré</b> par %{submitter_name}"
+    complete_kba_by_html: "<b>KBA terminé</b> par %{submitter_name}"
+    fail_kba_by_html: "<b>KBA échoué</b> par %{submitter_name}"
   import_list:
     select_worksheet: Sélectionner une feuille
     open: Ouvrir
@@ -3906,6 +3930,9 @@ fr: &fr
       range_without_total: "%{from}-%{to} événements"
 
 pt: &pt
+  knowledge_based_authentication: Autenticação baseada em conhecimento
+  kba_field: KBA
+  passed: Aprovado
   templates_that_require_email_or_phone_2fa_cannot_be_used_via_a_shared_link: Modelos que exigem 2FA por e-mail ou telefone não podem ser usados por meio de um link compartilhado.
   make_owner: Tornar proprietário
   billing: Pagamentos
@@ -4797,6 +4824,9 @@ pt: &pt
     start_verification_by_html: '<b>Verificação de identidade iniciada</b> por %{submitter_name}'
     complete_verification_by_html: '<b>Verificação de identidade concluída</b> por %{submitter_name} com %{provider}'
     api_complete_form_by_html: '<b>Submissão concluída via API</b> por %{submitter_name}'
+    start_kba_by_html: '<b>KBA iniciada</b> por %{submitter_name}'
+    complete_kba_by_html: '<b>KBA concluída</b> por %{submitter_name}'
+    fail_kba_by_html: '<b>KBA reprovada</b> por %{submitter_name}'
   import_list:
     select_worksheet: Selecionar planilha
     open: Abrir
@@ -4878,6 +4908,9 @@ pt: &pt
       range_without_total: "%{from}-%{to} eventos"
 
 de: &de
+  knowledge_based_authentication: Wissensbasierte Authentifizierung
+  kba_field: KBA
+  passed: Bestanden
   templates_that_require_email_or_phone_2fa_cannot_be_used_via_a_shared_link: Vorlagen, die eine Zwei-Faktor-Authentifizierung per E-Mail oder Telefon erfordern, können nicht über einen geteilten Link verwendet werden.
   make_owner: Eigentümer machen
   billing: Abrechnung
@@ -5769,6 +5802,9 @@ de: &de
     start_verification_by_html: '<b>Identitätsüberprüfung gestartet</b> von %{submitter_name}'
     complete_verification_by_html: '<b>Identitätsüberprüfung abgeschlossen</b> von %{submitter_name} mit %{provider}'
     api_complete_form_by_html: '<b>Einreichung über API abgeschlossen</b> von %{submitter_name}'
+    start_kba_by_html: '<b>KBA gestartet</b> von %{submitter_name}'
+    complete_kba_by_html: '<b>KBA abgeschlossen</b> von %{submitter_name}'
+    fail_kba_by_html: '<b>KBA fehlgeschlagen</b> von %{submitter_name}'
   import_list:
     select_worksheet: Arbeitsblatt auswählen
     open: Öffnen
@@ -6238,6 +6274,9 @@ he:
   too_many_requests_try_again_later: יותר מדי בקשות. נסה שוב מאוחר יותר.
 
 nl: &nl
+  knowledge_based_authentication: Kennisgebaseerde authenticatie
+  kba_field: KBA
+  passed: Geslaagd
   templates_that_require_email_or_phone_2fa_cannot_be_used_via_a_shared_link: Sjablonen waarvoor e-mail- of telefoon-2FA vereist is, kunnen niet via een gedeelde link worden gebruikt.
   make_owner: Eigenaar maken
   billing: Facturatie
@@ -7126,6 +7165,9 @@ nl: &nl
     start_verification_by_html: "<b>Identiteitsverificatie gestart</b> door %{submitter_name}"
     complete_verification_by_html: "<b>Identiteitsverificatie voltooid</b> door %{submitter_name} met %{provider}"
     api_complete_form_by_html: "<b>Inzending via API voltooid</b> door %{submitter_name}"
+    start_kba_by_html: "<b>KBA gestart</b> door %{submitter_name}"
+    complete_kba_by_html: "<b>KBA voltooid</b> door %{submitter_name}"
+    fail_kba_by_html: "<b>KBA mislukt</b> door %{submitter_name}"
   import_list:
     select_worksheet: Werkblad selecteren
     open: Openen
diff --git a/lib/submissions/generate_audit_trail.rb b/lib/submissions/generate_audit_trail.rb
index ed640fa5..588c83e2 100644
--- a/lib/submissions/generate_audit_trail.rb
+++ b/lib/submissions/generate_audit_trail.rb
@@ -265,6 +265,11 @@ module Submissions
             e['type'] == 'verification' && e['submitter_uuid'] == submitter.uuid && submitter.values[e['uuid']].present?
           end
 
+        is_kba_passed =
+          submission.template_fields.any? do |e|
+            e['type'] == 'kba' && e['submitter_uuid'] == submitter.uuid && submitter.values[e['uuid']].present?
+          end
+
         info_rows = [
           [
             composer.document.layout.formatted_text_box(
@@ -288,6 +293,9 @@ module Submissions
                 is_id_verified && {
                   text: "#{I18n.t('identity_verification')}: #{I18n.t('verified')}\n"
                 },
+                is_kba_passed && {
+                  text: "#{I18n.t('knowledge_based_authentication')}: #{I18n.t('passed')}\n"
+                },
                 completed_event.data['ip'] && { text: "IP: #{completed_event.data['ip']}\n" },
                 completed_event.data['sid'] && { text: "#{I18n.t('session_id')}: #{completed_event.data['sid']}\n" },
                 completed_event.data['ua'] && { text: "User agent: #{completed_event.data['ua']}\n" },
@@ -353,7 +361,7 @@ module Submissions
               text_align: field_name.to_s.match?(RTL_REGEXP) ? :right : :left,
               line_spacing: 1.3, padding: [0, 0, 2, 0]
             ),
-            if field['type'].in?(%w[image signature initials stamp]) &&
+            if field['type'].in?(%w[image signature initials stamp kba]) &&
                (attachment = submitter.attachments.find { |a| a.uuid == value }) &&
                attachment.image?
 
diff --git a/lib/submissions/generate_result_attachments.rb b/lib/submissions/generate_result_attachments.rb
index b81a9d79..2351897a 100644
--- a/lib/submissions/generate_result_attachments.rb
+++ b/lib/submissions/generate_result_attachments.rb
@@ -434,7 +434,7 @@ module Submissions
                 height: image.height * scale
               )
             end
-          when 'image', 'signature', 'initials', 'stamp'
+          when 'image', 'signature', 'initials', 'stamp', 'kba'
             attachment = submitter.attachments.find { |a| a.uuid == value }
 
             image =
diff --git a/lib/submitters/serialize_for_webhook.rb b/lib/submitters/serialize_for_webhook.rb
index 3d987d5a..c19b8537 100644
--- a/lib/submitters/serialize_for_webhook.rb
+++ b/lib/submitters/serialize_for_webhook.rb
@@ -111,7 +111,7 @@ module Submitters
     end
 
     def fetch_field_value(field, value, attachments_index, expires_at: nil)
-      if field['type'].in?(%w[image signature initials stamp payment])
+      if field['type'].in?(%w[image signature initials stamp payment kba])
         rails_storage_proxy_url(attachments_index[value], expires_at:)
       elsif field['type'] == 'file'
         Array.wrap(value).compact_blank.filter_map { |e| rails_storage_proxy_url(attachments_index[e], expires_at:) }