diff --git a/app/controllers/submit_form_controller.rb b/app/controllers/submit_form_controller.rb
index 7cde8f695..2f3ab0cb2 100644
--- a/app/controllers/submit_form_controller.rb
+++ b/app/controllers/submit_form_controller.rb
@@ -31,24 +31,22 @@ class SubmitFormController < ApplicationController
 
     Submissions.preload_with_pages(submission)
 
-    Submitters::MaybeUpdateDefaultValues.call(@submitter, current_user)
-
     @attachments_index = build_attachments_index(submission)
 
+    if current_user && current_user.email == @submitter.email
+      @current_user_data = current_user.as_json(only: %i[first_name last_name], methods: %i[full_name])
+
+      initials = UserConfigs.load_initials(current_user)
+
+      @prefill_initials = Submitters.build_prefill_attachment_data(@submitter, initials) if initials
+    end
+
     return unless @form_configs[:prefill_signature]
 
-    if (user_signature = UserConfigs.load_signature(current_user))
-      @signature_attachment = ActiveStorage::Attachment.find_or_create_by!(
-        blob_id: user_signature.blob_id,
-        name: 'attachments',
-        record: @submitter
-      )
-    end
+    signature = UserConfigs.load_signature(current_user) ||
+                Submitters::FindRememberedSignature.call(@submitter, params, cookies)
 
-    @signature_attachment ||=
-      Submitters::MaybeAssignDefaultBrowserSignature.call(@submitter, params, cookies, @attachments_index.values)
-
-    @attachments_index[@signature_attachment.uuid] = @signature_attachment if @signature_attachment
+    @prefill_signature = Submitters.build_prefill_attachment_data(@submitter, signature) if signature
   end
 
   def update
diff --git a/app/controllers/submit_form_prefill_attachments_controller.rb b/app/controllers/submit_form_prefill_attachments_controller.rb
new file mode 100644
index 000000000..d56dc2a45
--- /dev/null
+++ b/app/controllers/submit_form_prefill_attachments_controller.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+class SubmitFormPrefillAttachmentsController < ActionController::API
+  include ActiveStorage::SetCurrent
+
+  def create
+    submitter = Submitter.find_by!(slug: params[:submit_form_slug])
+
+    unless can_upload?(submitter)
+      return render json: { error: I18n.t('form_has_been_archived') }, status: :unprocessable_content
+    end
+
+    uuid, slug = ApplicationRecord.signed_id_verifier.verify(params[:prefill_token], purpose: :prefill_attachment)
+
+    raise ActiveRecord::RecordNotFound if slug != submitter.slug
+
+    source_attachment = ActiveStorage::Attachment.find_by!(uuid:)
+
+    attachment = submitter.attachments_attachments.find_or_create_by!(blob_id: source_attachment.blob_id)
+
+    render json: attachment.as_json(only: %i[uuid created_at], methods: %i[url filename content_type])
+  end
+
+  private
+
+  def can_upload?(submitter)
+    !submitter.declined_at? &&
+      !submitter.completed_at? &&
+      !submitter.submission.archived_at? &&
+      !submitter.submission.expired? &&
+      !submitter.submission.template&.archived_at?
+  end
+end
diff --git a/app/javascript/form.js b/app/javascript/form.js
index 96aba8b45..050e87e03 100644
--- a/app/javascript/form.js
+++ b/app/javascript/form.js
@@ -32,7 +32,9 @@ safeRegisterElement('submission-form', class extends HTMLElement {
       optionalInviteSubmitters: JSON.parse(this.dataset.optionalInviteSubmitters),
       schema: JSON.parse(this.dataset.schema),
       canSendEmail: this.dataset.canSendEmail === 'true',
-      previousSignatureValue: this.dataset.previousSignatureValue,
+      prefillSignature: this.dataset.prefillSignature ? JSON.parse(this.dataset.prefillSignature) : null,
+      prefillInitials: this.dataset.prefillInitials ? JSON.parse(this.dataset.prefillInitials) : null,
+      currentUser: this.dataset.currentUser ? JSON.parse(this.dataset.currentUser) : null,
       goToLast: this.dataset.goToLast === 'true',
       isDemo: this.dataset.isDemo === 'true',
       attribution: this.dataset.attribution !== 'false',
diff --git a/app/javascript/submission_form/form.vue b/app/javascript/submission_form/form.vue
index 695d3385b..80d3f45aa 100644
--- a/app/javascript/submission_form/form.vue
+++ b/app/javascript/submission_form/form.vue
@@ -491,8 +491,8 @@
             :reason="values[currentField.preferences?.reason_field_uuid]"
             :field="currentField"
             :values="values"
-            :previous-value="previousSignatureValueFor(currentField) || previousSignatureValue"
-            :touch-attachment-uuid="previousSignatureValue"
+            :previous-value="previousSignatureValueFor(currentField)"
+            :prefill-data="prefillSignature"
             :with-typed-signature="withTypedSignature"
             :remember-signature="rememberSignature"
             :attachments-index="attachmentsIndex"
@@ -507,7 +507,6 @@
             :show-field-names="showFieldNames"
             :native-platform="nativePlatform"
             @update:reason="values[currentField.preferences?.reason_field_uuid] = $event"
-            @touch-attachment="attachmentsIndex[previousSignatureValue] ? attachmentsIndex[previousSignatureValue].created_at = new Date() : null"
             @attached="attachments.push($event)"
             @start="scrollIntoField(currentField)"
             @minimize="minimizeForm"
@@ -521,6 +520,7 @@
             :dry-run="dryRun"
             :submitter="submitter"
             :previous-value="previousInitialsValue"
+            :prefill-data="prefillInitials"
             :attachments-index="attachmentsIndex"
             :show-field-names="showFieldNames"
             :submitter-slug="submitterSlug"
@@ -981,10 +981,20 @@ export default {
       required: false,
       default: ''
     },
-    previousSignatureValue: {
-      type: String,
+    prefillSignature: {
+      type: Object,
       required: false,
-      default: ''
+      default: null
+    },
+    prefillInitials: {
+      type: Object,
+      required: false,
+      default: null
+    },
+    currentUser: {
+      type: Object,
+      required: false,
+      default: null
     },
     allowToSkip: {
       type: Boolean,
@@ -1346,6 +1356,30 @@ export default {
 
     screen?.orientation?.addEventListener('change', this.onOrientationChange)
 
+    if (this.currentUser) {
+      this.fields.forEach((field) => {
+        if (field.readonly || field.type !== 'text') {
+          return
+        }
+
+        const fieldName = (field.name || '').toLowerCase()
+
+        let value
+
+        if (fieldName === 'full name' || fieldName === 'legal name') {
+          value = this.currentUser.full_name
+        } else if (fieldName === 'first name') {
+          value = this.currentUser.first_name
+        } else if (fieldName === 'last name') {
+          value = this.currentUser.last_name
+        }
+
+        if (value) {
+          this.values[field.uuid] ??= value
+        }
+      })
+    }
+
     this.fields.forEach((field) => {
       if (field.default_value && !field.readonly) {
         this.values[field.uuid] ||= field.default_value
diff --git a/app/javascript/submission_form/initials_step.vue b/app/javascript/submission_form/initials_step.vue
index 65cf82897..5f430476a 100644
--- a/app/javascript/submission_form/initials_step.vue
+++ b/app/javascript/submission_form/initials_step.vue
@@ -87,7 +87,7 @@
           </button>
         </span>
         <button
-          v-if="modelValue || computedPreviousValue"
+          v-if="modelValue || computedPreviousValue || computedPrefillData"
           type="button"
           class="btn font-medium btn-outline btn-sm clear-canvas-button"
           @click="remove"
@@ -139,8 +139,8 @@
       :name="`values[${field.uuid}]`"
     >
     <img
-      v-if="modelValue || computedPreviousValue"
-      :src="attachmentsIndex[modelValue || computedPreviousValue].url"
+      v-if="modelValue || computedPreviousValue || computedPrefillData"
+      :src="previousValueUrl"
       :alt="field.name || t('initials')"
       class="mx-auto bg-white border border-base-300 rounded max-h-44"
     >
@@ -150,12 +150,12 @@
         class="absolute top-0 right-0 left-0 bottom-0"
       />
       <label
-        v-if="!isDrawInitials && !modelValue && !computedPreviousValue"
+        v-if="!isDrawInitials && !modelValue && !computedPreviousValue && !computedPrefillData"
         for="initials_text_input"
         class="absolute top-0 right-0 left-0 bottom-0"
       />
       <canvas
-        v-show="!modelValue && !computedPreviousValue"
+        v-show="!modelValue && !computedPreviousValue && !computedPrefillData"
         ref="canvas"
         role="img"
         :aria-label="t('initials_drawing_area')"
@@ -166,7 +166,7 @@
       />
     </div>
     <input
-      v-if="!isDrawInitials && !modelValue && !computedPreviousValue"
+      v-if="!isDrawInitials && !modelValue && !computedPreviousValue && !computedPrefillData"
       id="initials_text_input"
       ref="textInput"
       class="base-input !text-2xl w-full mt-6 text-center"
@@ -236,6 +236,11 @@ export default {
       required: false,
       default: ''
     },
+    prefillData: {
+      type: Object,
+      required: false,
+      default: null
+    },
     nativePlatform: {
       type: String,
       required: false,
@@ -263,10 +268,24 @@ export default {
       } else {
         return null
       }
+    },
+    computedPrefillData () {
+      if (this.isUsePreviousValue && this.field.required === true && !this.previousValue && !this.modelValue) {
+        return this.prefillData
+      } else {
+        return null
+      }
+    },
+    previousValueUrl () {
+      if (this.computedPrefillData) {
+        return this.computedPrefillData.url
+      } else {
+        return this.attachmentsIndex[this.modelValue || this.computedPreviousValue].url
+      }
     }
   },
   created () {
-    this.isInitialsStarted = !!this.computedPreviousValue
+    this.isInitialsStarted = !!(this.computedPreviousValue || this.computedPrefillData)
   },
   async mounted () {
     this.$nextTick(() => {
@@ -407,7 +426,48 @@ export default {
         this.updateWrittenInitials({ target: this.$refs.textInput })
       }
     },
+    submitPrefillAttachment () {
+      if (this.dryRun) {
+        const attachment = { uuid: Math.random().toString(), url: this.prefillData.url }
+
+        this.$emit('attached', attachment)
+        this.$emit('update:model-value', attachment.uuid)
+
+        return Promise.resolve(attachment)
+      }
+
+      const formData = new FormData()
+
+      formData.append('prefill_token', this.prefillData.token)
+
+      return fetch(this.baseUrl + `/s/${this.submitterSlug}/prefill_attachments`, {
+        method: 'POST',
+        headers: { ...this.fetchOptions.headers },
+        body: formData
+      }).then(async (resp) => {
+        if (!resp.ok) {
+          const data = await resp.json()
+
+          return Promise.reject(new Error(data.error))
+        }
+
+        const attachment = await resp.json()
+
+        this.$emit('attached', attachment)
+        this.$emit('update:model-value', attachment.uuid)
+
+        return attachment
+      }).catch((error) => {
+        this.remove()
+
+        return Promise.reject(error)
+      })
+    },
     async submit () {
+      if (this.computedPrefillData) {
+        return this.submitPrefillAttachment()
+      }
+
       if (this.modelValue || this.computedPreviousValue) {
         if (this.computedPreviousValue) {
           this.$emit('update:model-value', this.computedPreviousValue)
diff --git a/app/javascript/submission_form/signature_step.vue b/app/javascript/submission_form/signature_step.vue
index e9eaafd4e..4dcf9bba5 100644
--- a/app/javascript/submission_form/signature_step.vue
+++ b/app/javascript/submission_form/signature_step.vue
@@ -45,7 +45,7 @@
         <span
           v-else-if="withTypedSignature && format !== 'drawn_or_upload' && format !== 'typed_or_upload' && format !== 'typed' && format !== 'drawn' && format !== 'upload'"
           class="md:tooltip ml-2"
-          :class="{ 'hidden sm:inline': modelValue || computedPreviousValue }"
+          :class="{ 'hidden sm:inline': modelValue || computedPreviousValue || computedPrefillData }"
           :data-tip="t('type_text')"
         >
           <button
@@ -68,7 +68,7 @@
         <span
           v-if="format !== 'typed' && format !== 'drawn' && format !== 'upload' && format !== 'drawn_or_typed'"
           class="md:tooltip"
-          :class="{ 'hidden sm:inline': modelValue || computedPreviousValue }"
+          :class="{ 'hidden sm:inline': modelValue || computedPreviousValue || computedPrefillData }"
           :data-tip="t('take_photo')"
         >
           <button
@@ -95,7 +95,7 @@
           </button>
         </span>
         <button
-          v-if="modelValue || computedPreviousValue"
+          v-if="modelValue || computedPreviousValue || computedPrefillData"
           type="button"
           class="btn btn-outline btn-sm font-medium reupload-button"
           @click="remove"
@@ -107,7 +107,7 @@
           {{ t(format === 'upload' ? 'reupload' : 'redraw') }}
         </button>
         <span
-          v-if="withQrButton && !modelValue && !computedPreviousValue && format !== 'typed_or_upload' && format !== 'typed' && format !== 'upload'"
+          v-if="withQrButton && !modelValue && !computedPreviousValue && !computedPrefillData && format !== 'typed_or_upload' && format !== 'typed' && format !== 'upload'"
           class="md:tooltip before:translate-x-[-90%]"
           :data-tip="t('sign_on_the_touchscreen')"
         >
@@ -154,20 +154,14 @@
       type="hidden"
       :name="`values[${field.uuid}]`"
     >
-    <input
-      v-if="isTouchAttachment"
-      :value="touchAttachmentUuid"
-      type="hidden"
-      name="touch_attachment_uuid"
-    >
     <img
-      v-if="modelValue || computedPreviousValue"
-      :src="attachmentsIndex[modelValue || computedPreviousValue].url"
+      v-if="modelValue || computedPreviousValue || computedPrefillData"
+      :src="previousValueUrl"
       :alt="field.name || t('signature')"
       class="mx-auto bg-white border border-base-300 rounded max-h-44"
     >
     <FileDropzone
-      v-if="format === 'upload' && !modelValue && !computedPreviousValue"
+      v-if="format === 'upload' && !modelValue && !computedPreviousValue && !computedPrefillData"
       :message="`${t('upload')} ${field.name || t('signature')}`"
       :submitter-slug="submitterSlug"
       :dry-run="dryRun"
@@ -179,7 +173,7 @@
       class="relative select-none"
     >
       <div
-        v-if="!modelValue && !computedPreviousValue && !isShowQr && !isTextSignature && isSignatureStarted"
+        v-if="!modelValue && !computedPreviousValue && !computedPrefillData && !isShowQr && !isTextSignature && isSignatureStarted"
         class="absolute top-0.5 right-0.5"
       >
         <button
@@ -199,7 +193,7 @@
         class="absolute top-0 right-0 left-0 bottom-0"
       />
       <canvas
-        v-show="!modelValue && !computedPreviousValue"
+        v-show="!modelValue && !computedPreviousValue && !computedPrefillData"
         ref="canvas"
         role="img"
         :aria-label="t('signature_drawing_area')"
@@ -244,7 +238,7 @@
       </div>
     </div>
     <input
-      v-if="isTextSignature && !modelValue && !computedPreviousValue"
+      v-if="isTextSignature && !modelValue && !computedPreviousValue && !computedPrefillData"
       id="signature_text_input"
       ref="textInput"
       class="base-input !text-2xl w-full mt-6"
@@ -440,10 +434,10 @@ export default {
       required: false,
       default: ''
     },
-    touchAttachmentUuid: {
-      type: String,
+    prefillData: {
+      type: Object,
       required: false,
-      default: ''
+      default: null
     },
     reason: {
       type: String,
@@ -471,14 +465,13 @@ export default {
       default: ''
     }
   },
-  emits: ['attached', 'update:model-value', 'start', 'minimize', 'update:reason', 'touch-attachment'],
+  emits: ['attached', 'update:model-value', 'start', 'minimize', 'update:reason'],
   data () {
     return {
       isSignatureStarted: false,
       isShowQr: false,
       isOtherReason: false,
       isUsePreviousValue: true,
-      isTouchAttachment: false,
       isTextSignature: !this.signatureSrc && (!!this.signatureText || this.field.preferences?.format === 'typed' || this.field.preferences?.format === 'typed_or_upload'),
       uploadImageInputKey: Math.random().toString()
     }
@@ -506,10 +499,24 @@ export default {
       } else {
         return null
       }
+    },
+    computedPrefillData () {
+      if (this.isUsePreviousValue && this.field.required === true && !this.previousValue && !this.modelValue) {
+        return this.prefillData
+      } else {
+        return null
+      }
+    },
+    previousValueUrl () {
+      if (this.computedPrefillData) {
+        return this.computedPrefillData.url
+      } else {
+        return this.attachmentsIndex[this.modelValue || this.computedPreviousValue].url
+      }
     }
   },
   created () {
-    this.isSignatureStarted = !!this.computedPreviousValue
+    this.isSignatureStarted = !!(this.computedPreviousValue || this.computedPrefillData)
 
     if (this.withSigningReason) {
       this.field.preferences ||= {}
@@ -890,15 +897,49 @@ export default {
         console.error(e)
       }
     },
-    async submit () {
-      if (this.modelValue || this.computedPreviousValue) {
-        if (this.touchAttachmentUuid && this.computedPreviousValue === this.touchAttachmentUuid && !Object.values(this.values).includes(this.touchAttachmentUuid)) {
-          this.isTouchAttachment = true
-          this.$emit('touch-attachment', this.touchAttachmentUuid)
-        } else {
-          this.isTouchAttachment = false
+    submitPrefillAttachment () {
+      if (this.dryRun) {
+        const attachment = { uuid: Math.random().toString(), url: this.prefillData.url }
+
+        this.$emit('attached', attachment)
+        this.$emit('update:model-value', attachment.uuid)
+
+        return Promise.resolve(attachment)
+      }
+
+      const formData = new FormData()
+
+      formData.append('prefill_token', this.prefillData.token)
+
+      return fetch(this.baseUrl + `/s/${this.submitterSlug}/prefill_attachments`, {
+        method: 'POST',
+        headers: { ...this.fetchOptions.headers },
+        body: formData
+      }).then(async (resp) => {
+        if (!resp.ok) {
+          const data = await resp.json()
+
+          return Promise.reject(new Error(data.error))
         }
 
+        const attachment = await resp.json()
+
+        this.$emit('attached', attachment)
+        this.$emit('update:model-value', attachment.uuid)
+
+        return attachment
+      }).catch((error) => {
+        this.remove()
+
+        return Promise.reject(error)
+      })
+    },
+    async submit () {
+      if (this.computedPrefillData) {
+        return this.submitPrefillAttachment()
+      }
+
+      if (this.modelValue || this.computedPreviousValue) {
         if (this.computedPreviousValue) {
           this.$emit('update:model-value', this.computedPreviousValue)
         }
diff --git a/app/views/submit_form/_submission_form.html.erb b/app/views/submit_form/_submission_form.html.erb
index b7290509a..f9297f3c1 100644
--- a/app/views/submit_form/_submission_form.html.erb
+++ b/app/views/submit_form/_submission_form.html.erb
@@ -2,4 +2,4 @@
 <% data_fields = Submissions.filtered_conditions_fields(submitter).to_json %>
 <% invite_submitters = (submitter.submission.template_submitters || submitter.submission.template.submitters).select { |s| s['invite_by_uuid'] == submitter.uuid && submitter.submission.submitters.none? { |e| e.uuid == s['uuid'] } }.to_json %>
 <% optional_invite_submitters = (submitter.submission.template_submitters || submitter.submission.template.submitters).select { |s| s['optional_invite_by_uuid'] == submitter.uuid && submitter.submission.submitters.none? { |e| e.uuid == s['uuid'] } }.to_json %>
-<submission-form data-native-platform="<%= turbo_native_ios? ? 'ios' : (turbo_native_android? ? 'android' : '') %>" data-attribution="<%= !turbo_native_app? %>" data-is-demo="<%= Docuseal.demo? %>" data-schema="<%= schema.to_json %>" data-reuse-signature="<%= configs[:reuse_signature] %>" data-require-signing-reason="<%= configs[:require_signing_reason] %>" data-with-signature-id="<%= configs[:with_signature_id] %>" data-with-field-labels="<%= configs[:with_field_labels] %>" data-with-confetti="<%= configs[:with_confetti] %>" data-completed-redirect-url="<%= submitter.preferences['completed_redirect_url'].presence || submitter.submission.template&.preferences&.dig('completed_redirect_url') %>" data-completed-message="<%= (configs[:completed_message]&.compact_blank.presence || submitter.submission.template&.preferences&.dig('completed_message') || {}).to_json %>" data-completed-button="<%= configs[:completed_button].to_json %>" data-go-to-last="<%= submitter.preferences.key?('go_to_last') ? submitter.preferences['go_to_last'] : submitter.opened_at? %>" data-submitter="<%= submitter.to_json(only: %i[uuid slug name phone email]) %>" data-can-send-email="<%= Docuseal.multitenant? || Accounts.can_send_emails?(submitter.submission.account) %>" data-optional-invite-submitters="<%= optional_invite_submitters %>" data-invite-submitters="<%= invite_submitters %>" data-attachments="<%= data_attachments %>" data-fields="<%= data_fields %>" data-values="<%= submitter.values.to_json %>" data-with-typed-signature="<%= configs[:with_typed_signature] %>" data-signature-text="<%= params[:signature] %>" data-previous-signature-value="<%= local_assigns[:signature_attachment]&.uuid %>" data-remember-signature="<%= configs[:prefill_signature] %>" data-dry-run="<%= local_assigns[:dry_run] %>" data-view-token="<%= Submitter.signed_id_verifier.generate(submitter.slug, purpose: :view_form, expires_in: 1.minute) unless local_assigns[:dry_run] %>" data-expand="<%= local_assigns[:expand] %>" data-scroll-padding="<%= local_assigns[:scroll_padding] %>" data-language="<%= I18n.locale.to_s.split('-').first %>"></submission-form>
+<submission-form data-native-platform="<%= turbo_native_ios? ? 'ios' : (turbo_native_android? ? 'android' : '') %>" data-attribution="<%= !turbo_native_app? %>" data-is-demo="<%= Docuseal.demo? %>" data-schema="<%= schema.to_json %>" data-reuse-signature="<%= configs[:reuse_signature] %>" data-require-signing-reason="<%= configs[:require_signing_reason] %>" data-with-signature-id="<%= configs[:with_signature_id] %>" data-with-field-labels="<%= configs[:with_field_labels] %>" data-with-confetti="<%= configs[:with_confetti] %>" data-completed-redirect-url="<%= submitter.preferences['completed_redirect_url'].presence || submitter.submission.template&.preferences&.dig('completed_redirect_url') %>" data-completed-message="<%= (configs[:completed_message]&.compact_blank.presence || submitter.submission.template&.preferences&.dig('completed_message') || {}).to_json %>" data-completed-button="<%= configs[:completed_button].to_json %>" data-go-to-last="<%= submitter.preferences.key?('go_to_last') ? submitter.preferences['go_to_last'] : submitter.opened_at? %>" data-submitter="<%= submitter.to_json(only: %i[uuid slug name phone email]) %>" data-can-send-email="<%= Docuseal.multitenant? || Accounts.can_send_emails?(submitter.submission.account) %>" data-optional-invite-submitters="<%= optional_invite_submitters %>" data-invite-submitters="<%= invite_submitters %>" data-attachments="<%= data_attachments %>" data-fields="<%= data_fields %>" data-values="<%= submitter.values.to_json %>" data-with-typed-signature="<%= configs[:with_typed_signature] %>" data-signature-text="<%= params[:signature] %>" data-prefill-signature="<%= local_assigns[:prefill_signature]&.to_json %>" data-prefill-initials="<%= local_assigns[:prefill_initials]&.to_json %>" data-current-user="<%= local_assigns[:current_user_data]&.to_json %>" data-remember-signature="<%= configs[:prefill_signature] %>" data-dry-run="<%= local_assigns[:dry_run] %>" data-view-token="<%= Submitter.signed_id_verifier.generate(submitter.slug, purpose: :view_form, expires_in: 1.minute) unless local_assigns[:dry_run] %>" data-expand="<%= local_assigns[:expand] %>" data-scroll-padding="<%= local_assigns[:scroll_padding] %>" data-language="<%= I18n.locale.to_s.split('-').first %>"></submission-form>
diff --git a/app/views/submit_form/show.html.erb b/app/views/submit_form/show.html.erb
index 802d69e4e..b02a8a273 100644
--- a/app/views/submit_form/show.html.erb
+++ b/app/views/submit_form/show.html.erb
@@ -177,7 +177,7 @@
 <div class="fixed bottom-0 w-full h-0 z-50">
   <div class="mx-auto" style="max-width: 1000px">
     <div class="relative md:mx-32">
-      <%= render 'submit_form/submission_form', attachments_index: @attachments_index, submitter: @submitter, signature_attachment: @signature_attachment, configs: @form_configs, dry_run: local_assigns[:dry_run], expand: local_assigns[:expand], scroll_padding: local_assigns.fetch(:scroll_padding, turbo_native_app? ? '-80px' : '-110px'), schema: %>
+      <%= render 'submit_form/submission_form', attachments_index: @attachments_index, submitter: @submitter, prefill_signature: @prefill_signature, prefill_initials: @prefill_initials, current_user_data: @current_user_data, configs: @form_configs, dry_run: local_assigns[:dry_run], expand: local_assigns[:expand], scroll_padding: local_assigns.fetch(:scroll_padding, turbo_native_app? ? '-80px' : '-110px'), schema: %>
     </div>
   </div>
 </div>
diff --git a/config/routes.rb b/config/routes.rb
index a0c9869f9..cd582dfde 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -163,6 +163,7 @@ Rails.application.routes.draw do
     resource :click_email, only: %i[create], controller: 'submit_form_click_email'
     resources :view, only: %i[create], controller: 'submit_form_view'
     resources :upload, only: %i[create], controller: 'submit_form_upload'
+    resources :prefill_attachments, only: %i[create], controller: 'submit_form_prefill_attachments'
     resources :debug, only: %i[index], controller: 'submissions_debug' if Rails.env.development?
     get :completed
     get :delegated
diff --git a/lib/submitters.rb b/lib/submitters.rb
index 55bb9ca40..996efaa52 100644
--- a/lib/submitters.rb
+++ b/lib/submitters.rb
@@ -129,6 +129,13 @@ module Submitters
     ActiveStorage::Attachment.create!(blob:, name: 'attachments', record: submitter)
   end
 
+  def build_prefill_attachment_data(submitter, attachment)
+    token = ApplicationRecord.signed_id_verifier.generate([attachment.uuid, submitter.slug],
+                                                          purpose: :prefill_attachment)
+
+    { token:, url: attachment.url }
+  end
+
   def normalize_preferences(account, user, params)
     preferences = {}
 
diff --git a/lib/submitters/maybe_assign_default_browser_signature.rb b/lib/submitters/find_remembered_signature.rb
similarity index 51%
rename from lib/submitters/maybe_assign_default_browser_signature.rb
rename to lib/submitters/find_remembered_signature.rb
index 6a77b1e8c..572670bf6 100644
--- a/lib/submitters/maybe_assign_default_browser_signature.rb
+++ b/lib/submitters/find_remembered_signature.rb
@@ -1,30 +1,28 @@
 # frozen_string_literal: true
 
 module Submitters
-  module MaybeAssignDefaultBrowserSignature
-    SIGNED_UUID_PURPPOSE = 'signature'
+  module FindRememberedSignature
+    SIGNED_UUID_PURPOSE = 'signature'
 
     module_function
 
-    def call(submitter, params, cookies = nil, attachments = [])
-      attachments = attachments.select { |e| e.record_id == submitter.id && e.record_type == 'Submitter' }
-
+    def call(submitter, params, cookies = nil)
       if params[:signed_signature_uuids].present?
-        find_storage_signature(submitter, params[:signed_signature_uuids], attachments)
+        find_storage_signature(submitter, params[:signed_signature_uuids])
       elsif cookies
-        find_session_signature(submitter, cookies, attachments)
+        find_session_signature(submitter, cookies)
       end
     end
 
     def sign_signature_uuid(uuid)
-      ApplicationRecord.signed_id_verifier.generate(uuid, purpose: SIGNED_UUID_PURPPOSE)
+      ApplicationRecord.signed_id_verifier.generate(uuid, purpose: SIGNED_UUID_PURPOSE)
     end
 
     def verify_signature_uuid(signed_uuid)
-      ApplicationRecord.signed_id_verifier.verified(signed_uuid, purpose: SIGNED_UUID_PURPPOSE)
+      ApplicationRecord.signed_id_verifier.verified(signed_uuid, purpose: SIGNED_UUID_PURPOSE)
     end
 
-    def find_storage_signature(submitter, signed_uuids, attachments)
+    def find_storage_signature(submitter, signed_uuids)
       signed_uuid = signed_uuids[submitter.email]
 
       return if signed_uuid.blank?
@@ -33,10 +31,10 @@ module Submitters
 
       return if uuid.blank?
 
-      find_signature_from_uuid(submitter, uuid, attachments)
+      find_signature_from_uuid(submitter, uuid)
     end
 
-    def find_session_signature(submitter, cookies, attachments)
+    def find_session_signature(submitter, cookies)
       values =
         begin
           JSON.parse(cookies.encrypted[:signature_uuids].presence || '{}')
@@ -50,23 +48,17 @@ module Submitters
 
       return if uuid.blank?
 
-      find_signature_from_uuid(submitter, uuid, attachments)
+      find_signature_from_uuid(submitter, uuid)
     end
 
-    def find_signature_from_uuid(submitter, uuid, attachments)
+    def find_signature_from_uuid(submitter, uuid)
       signature_attachment = ActiveStorage::Attachment.find_by(uuid:)
 
       return unless signature_attachment
 
       return if signature_attachment.record.email != submitter.email
 
-      existing_attachment = attachments.find do |a|
-        a.blob_id == signature_attachment.blob_id && submitter.id == a.record_id
-      end
-
-      return existing_attachment if existing_attachment
-
-      submitter.attachments_attachments.create_or_find_by!(blob_id: signature_attachment.blob_id)
+      signature_attachment
     end
   end
 end
diff --git a/lib/submitters/maybe_update_default_values.rb b/lib/submitters/maybe_update_default_values.rb
deleted file mode 100644
index d7a449116..000000000
--- a/lib/submitters/maybe_update_default_values.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-# frozen_string_literal: true
-
-module Submitters
-  module MaybeUpdateDefaultValues
-    module_function
-
-    def call(submitter, current_user)
-      return if current_user.blank? || current_user.email != submitter.email
-
-      user = current_user
-
-      fields = submitter.submission.template_fields || submitter.submission.template.fields
-
-      fields.each do |field|
-        next if field['submitter_uuid'] != submitter.uuid
-
-        default_value = get_default_value_for_field(field, user, submitter)
-
-        submitter.values[field['uuid']] ||= default_value if default_value.present?
-      end
-
-      submitter.save!
-    end
-
-    def get_default_value_for_field(field, user, submitter)
-      field_name = field['name'].to_s.downcase
-
-      if field_name.in?(['full name', 'legal name'])
-        user.full_name
-      elsif field_name == 'first name'
-        user.first_name
-      elsif field_name == 'last name'
-        user.last_name
-      elsif field['type'] == 'initials' && (initials = UserConfigs.load_initials(user))
-        attachment = ActiveStorage::Attachment.find_or_create_by!(
-          blob_id: initials.blob_id,
-          name: 'attachments',
-          record: submitter
-        )
-
-        attachment.uuid
-      end
-    end
-  end
-end
diff --git a/lib/submitters/submit_values.rb b/lib/submitters/submit_values.rb
index 24c41fec4..08920ea1c 100644
--- a/lib/submitters/submit_values.rb
+++ b/lib/submitters/submit_values.rb
@@ -54,10 +54,6 @@ module Submitters
         reason_field = maybe_set_signature_reason!(values, submitter, params)
         validate_values!(reason_field ? values.except(reason_field['uuid']) : values, submitter, params, request)
 
-        if (touch_attachment_uuid = params[:touch_attachment_uuid].presence)
-          ActiveStorage::Attachment.where(uuid: touch_attachment_uuid, record: submitter).touch_all(:created_at)
-        end
-
         if params[:completed] == 'true'
           maybe_invite_via_field(submitter, request)