diff --git a/package-lock.json b/package-lock.json
index 959b15a..dc0a0ca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@fullfabric/public-api",
-  "version": "1.6.0",
+  "version": "1.7.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@fullfabric/public-api",
-      "version": "1.6.0",
+      "version": "1.7.0",
       "license": "MIT",
       "dependencies": {
         "assert": "^2.0.0",
diff --git a/package.json b/package.json
index 0e31dee..2bb97e0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@fullfabric/public-api",
-  "version": "1.6.0",
+  "version": "1.7.0",
   "description": "Function wrappers for the FullFabric public API.",
   "type": "module",
   "browser": "dist/index.js",
diff --git a/spec/utils/getPageDigest.spec.js b/spec/utils/getPageDigest.spec.js
deleted file mode 100644
index 29e170d..0000000
--- a/spec/utils/getPageDigest.spec.js
+++ /dev/null
@@ -1,64 +0,0 @@
-import getPageDigest from '../../src/utils/getPageDigest'
-
-describe('utils.getPageDigest(opts)', () => {
-  let oldUserAgent
-
-  beforeAll(() => {
-    oldUserAgent = navigator.userAgent
-
-    Object.defineProperty(navigator, 'userAgent', {
-      configurable: true,
-      value:
-        'Mozilla/5.0 (darwin) AppleWebKit/537.36 (KHTML, like Gecko) jsdom/20.0.3'
-    })
-  })
-
-  afterAll(() => {
-    Object.defineProperty(navigator, 'userAgent', {
-      configurable: true,
-      value: oldUserAgent
-    })
-  })
-
-  describe('when no request-id meta element is available', () => {
-    it('returns null', async () => {
-      expect(await getPageDigest()).toBeNull()
-    })
-
-    it('can use a given requestId', async () => {
-      expect(await getPageDigest({ requestId: '12345' })).toEqual(
-        '7f1c12a5c58c6f29bcaeaf5c6382fef305660da38f2d0919deac9fc4a58705d4'
-      )
-    })
-  })
-
-  describe('when a request-id meta element is available', () => {
-    beforeEach(() => {
-      document.head.innerHTML = `
-        <meta name="request-id" content="12345">
-      `
-    })
-
-    it("uses the request-id meta element's content", async () => {
-      expect(await getPageDigest()).toEqual(
-        '7f1c12a5c58c6f29bcaeaf5c6382fef305660da38f2d0919deac9fc4a58705d4'
-      )
-    })
-
-    it('can use a given requestId instead', async () => {
-      expect(await getPageDigest({ requestId: '54321' })).toEqual(
-        '0b3adfbef9370498eb8a03f99fba9e86a41b89d1beef6499646d20090db0739b'
-      )
-    })
-
-    it("can suffix the digest with another digest of a source's type and ID", async () => {
-      expect(
-        await getPageDigest({ sourceType: 'form', sourceId: '12345' })
-      ).toEqual(
-        '7f1c12a5c58c6f29bcaeaf5c6382fef305660da38f2d0919deac9fc4a58705d4' +
-          ':' +
-          '0daba4f5e1a46e9e2be8bd4aac8651a020267a7da81690be4f093abe635b6aa1'
-      )
-    })
-  })
-})
diff --git a/src/api/submitEventResponse.js b/src/api/submitEventResponse.js
index 95ef9a5..b737ba1 100644
--- a/src/api/submitEventResponse.js
+++ b/src/api/submitEventResponse.js
@@ -2,7 +2,6 @@ import assert from 'assert'
 import { pick } from 'lodash-es'
 
 import checkResponse from '../utils/checkResponse'
-import getPageDigest from '../utils/getPageDigest'
 import url from '../utils/url'
 
 /**
@@ -10,7 +9,6 @@ import url from '../utils/url'
  *
  * @param {String} eventId An Event ID
  * @param {FormData} eventData The data to submit to the event.
- * @param {String} [opts.requestId] Customize the requestId used for anti-spam.
  * @param {String} [opts.baseUrl] The base URL for the API. Set if different
  *                                from the current location.
  * @param {String} [opts.externalDomainToken] A token to include in the request
@@ -30,12 +28,6 @@ export default async function submitEventResponse(
     'eventData must be provided and be a FormData instance'
   )
 
-  const digest = await getPageDigest({
-    requestId: opts.requestId,
-    sourceType: 'event',
-    sourceId: eventId
-  })
-
   const urlOpts = {
     ...pick(opts, ['baseUrl']),
     query: { external_domain_token: opts.externalDomainToken }
@@ -46,7 +38,6 @@ export default async function submitEventResponse(
     {
       credentials: 'same-origin',
       method: 'POST',
-      headers: { 'X-FF-DIGEST': digest },
       body: eventData
     }
   )
diff --git a/src/api/submitForm.js b/src/api/submitForm.js
index af78636..37aef2a 100644
--- a/src/api/submitForm.js
+++ b/src/api/submitForm.js
@@ -2,7 +2,6 @@ import assert from 'assert'
 import { pick } from 'lodash-es'
 
 import checkResponse from '../utils/checkResponse'
-import getPageDigest from '../utils/getPageDigest'
 import url from '../utils/url'
 
 /**
@@ -10,7 +9,6 @@ import url from '../utils/url'
  *
  * @param {String} formId A Form ID
  * @param {FormData} formData The data to submit to the form.
- * @param {String} [opts.requestId] Customize the requestId used for anti-spam.
  * @param {String} [opts.baseUrl] The base URL for the API. Set if different
  *                                from the current location.
  * @param {String} [opts.externalDomainToken] A token to include in the request
@@ -26,12 +24,6 @@ export default async function submitForm(formId, formData, opts = {}) {
     'formData must be provided and be a FormData instance'
   )
 
-  const digest = await getPageDigest({
-    requestId: opts.requestId,
-    sourceType: 'form',
-    sourceId: formId
-  })
-
   const urlOpts = {
     ...pick(opts, ['baseUrl']),
     query: { external_domain_token: opts.externalDomainToken }
@@ -42,7 +34,6 @@ export default async function submitForm(formId, formData, opts = {}) {
     {
       credentials: 'same-origin',
       method: 'POST',
-      headers: { 'X-FF-DIGEST': digest },
       body: formData
     }
   )
diff --git a/src/utils/getPageDigest.js b/src/utils/getPageDigest.js
deleted file mode 100644
index e8c8a2b..0000000
--- a/src/utils/getPageDigest.js
+++ /dev/null
@@ -1,44 +0,0 @@
-/**
- * Generates a digest for anti-spam purposes.
- *
- * This algorithm should match the backend's exactly, otherwise the requests
- * will be unauthorized.
- *
- * By default, each digest is unique to a page load. When there are multiple
- * submissions possible in the same page, e.g. via multiple forms, a source can
- * be passed to generate a digest unique to it.
- *
- * @param {String} [requestId] ID of the request, pass if originating from an API request.
- * @param {String} [sourceType] Type of source for the digest, should match backend.
- * @param {String} [sourceId] ID of source for the digest, should match backend.
- * @returns {String} The generated digest.
- */
-export default async function getPageDigest({
-  requestId,
-  sourceType,
-  sourceId
-} = {}) {
-  requestId ||= document.querySelector("meta[name='request-id']")?.content || ''
-
-  // If there's no requestId, no point generating a digest, won't ever match
-  // the backend. Same if we can't access the crypto API.
-  if (!requestId || !crypto?.subtle?.digest) return null
-
-  let digest = await makeDigest(`${navigator.userAgent}:${requestId}`)
-
-  if (sourceType && sourceId) {
-    const suffix = `${sourceType}:${sourceId}`
-    digest += `:${await makeDigest(suffix)}`
-  }
-
-  return digest
-}
-
-async function makeDigest(str) {
-  const message = new TextEncoder().encode(str)
-  const digestRaw = await crypto.subtle.digest('SHA-256', message)
-
-  return Array.from(new Uint8Array(digestRaw))
-    .map((b) => b.toString(16).padStart(2, '0'))
-    .join('')
-}
diff --git a/src/utils/index.js b/src/utils/index.js
index 087a944..e0c3f89 100644
--- a/src/utils/index.js
+++ b/src/utils/index.js
@@ -1,4 +1,3 @@
-export { default as getPageDigest } from './getPageDigest'
 export { default as checkResponse } from './checkResponse'
 export { default as extractHeaders } from './extractHeaders'
 export { default as url } from './url'