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iProov: Biometric Face Verification for Remote Identity Assurance

iProov Biometrics Web SDK v5.4.1

📖 Table of contents

🤳 Introduction

The iProov Biometrics Web SDK is the client for web browser based authentication. It can be integrated in a number of ways to support your web journeys for onboarding and authentication. You can find out more about how to use iProov Web in your User Journeys and create API Keys on the iProov Portal.

You will need to generate a token from your back-end to use with the iProov Biometrics Web SDK. You can use the REST API to make the relevant calls and return the token to your front-end. See the backend section for more details.

Check out our example, which can be spun up with a single command, which demonstrates an example backend/frontend integration.

iProov offers Genuine Presence Assurance™ technology (also known as "Dynamic Liveness") and Liveness Assurance™ technology (also known as "Express Liveness"):

  • Genuine Presence Assurance verifies that an online remote user is the right person, a real person and that they are authenticating right now, for purposes of access control and security.
  • Liveness Assurance verifies a remote online user is the right person and a real person for access control and security.

✍ Registration

You can obtain API credentials by registering on the iProov Portal.

📲 Installation

The NPM package @iproov/web-sdk allows for integration of the iProov Biometrics Web SDK. It makes use of the Web Components APIs which are supported by most modern browsers and uses the Polymer Project to add support where they are not yet available.

NPM Package

Using the @iproov/web-sdk package is the recommended way of using the iProov Web SDK in production, and works best with a bundler like Webpack, Parcel or Rollup. The iProov Web SDK is held in a private NPM registry, to gain access, please contact [email protected] sharing your NPM username and you will be given instructions on usage.

⚠️ The iProov Web SDK shouldn't be included in any bundling, obfuscation, or minification processes. We have taken all necessary steps to ensure the SDK is as small as possible. Including the SDK in any of these processes may cause unexpected errors or performance degradation.

⚠️ When you have been granted access, to use the @iproov/web-sdk via your CLI, you will need to authenticate with NPM Login or YARN login.

Setup

Install the package as a dependency. You can use Yarn or NPM to do this.

yarn add @iproov/web-sdk
npm i @iproov/web-sdk --save

After you have installed the @iproov/web-sdk package, you can require or import it into your codebase:

// ESM or Module Bundler:
import "@iproov/web-sdk"

// CJS style:
require("@iproov/web-sdk")

It's as simple as that to include the iProov Biometrics Web SDK with your project. Now you can inject the web component where you need it using one of the integration methods shown below.

🔒 A secure context is required when using the iProov Web SDK. This means that the page must be served over https including when using localhost. If you are using localhost, you can use a self-signed certificate.

🚀 Get started

Backend

To make use of this SDK you will require integration with the iProov backend service. You can obtain platform credentials and read our integration guide on portal.iproov.com.

When starting an iProov transaction (or claim), you first need to generate an enrolment or verification token, which can be passed on page load or fetched with AJAX, then used to initialise the iProov Biometrics Web SDK on the frontend.

After receiving the result from the SDK, you must then confirm its authenticity by validating the enrolment or verification token before escalating the user's privileges. This must be done from your backend and is typically invoked with a redirect, form submission or AJAX call triggered by the passed event.

⚠️ The REST API should always be called from your backend so as to never expose your secret to your client application. Always call the validate API from your backend after receiving a result; never trust the result provided by the web client.

Frontend

Once an iProov token has been generated by your backend, you should pass it as an attribute to the <iproov-me> element using one of the integration methods described below. After a successful iProov, the result must be validated by the backend before granting the user any privileges.

HTML

The simplest way to pass the token to iProov is to include it as an attribute to the <iproov-me> HTML tag as shown here:

<iproov-me token="***YOUR_TOKEN_HERE***" base_url="***IPROOV_PLATFORM_URL_HERE***"></iproov-me>

JavaScript

The <iproov-me> element can also be injected into the page with the token:

window.addEventListener("WebComponentsReady", function (event) {
  const iProovMe = document.createElement("iproov-me")
  iProovMe.setAttribute("token", "***YOUR_TOKEN_HERE***")
  document.getElementById("your-container-id").appendChild(iProovMe)
})

jQuery

The HTML can also be injected directly onto the page as in this jQuery example:

window.addEventListener("WebComponentsReady", function (event) {
  $("#your-container-id").append($('<iproov-me token="***YOUR_TOKEN_HERE***"></iproov-me>'))
})

There are also the following framework specific example integrations available on the wiki:

ℹ️ JavaScript methods are run after the WebComponentsReady event to ensure that the SDK is ready to be injected.

⚙ Options

The behavior of the iProov Biometrics Web SDK can be altered by setting the following options as attributes of the <iproov-me> tag in the same way as the token.

Network Timeout

Time in seconds for the backend to ack a message we send. In the event of the timeout being exceeded, the error event will fire with the feedback code error_network.

The minimum, default value is 20 seconds. To set the timeout to 25 seconds you would pass the following option:

<iproov-me token="***YOUR_TOKEN_HERE***" network_timeout="25"></iproov-me>

Setting this option lower than the defaults may increase error rates, so please be mindful when changing this.

Base URL

You can change the backend server you are attempting to iProov against by passing the base_url property. This needs to point to the same platform used for generating tokens (defaults to the EU platform if not defined). Reverse proxies are supported and a custom path to the WebSocket endpoint can be used, for example: https://example.com/custom-path/ws/v2/

<iproov-me token="***YOUR_TOKEN_HERE***" base_url="https://eu.rp.secure.iproov.me"></iproov-me>

Assets URL

Critical dependencies are loaded from our CDN at cdn.iproov.app. We recommend in production that you self-host these, and set the assets_url to reflect this:

<iproov-me token="***YOUR_TOKEN_HERE***" assets_url="https://cdn.iproov.app/assets"></iproov-me>

ℹ️ Full wiki page on assets_url and hosting assets

Logo

You can use a custom logo by simply passing a relative link, absolute path or data URI to your logo. We recommend providing a logo in SVG format, but any web format is supported. If you don't pass a logo, the iProov logo will be shown by default. If you do not want a logo to show pass the logo attribute as null.

<iproov-me token="***YOUR_TOKEN_HERE***" logo="https://example.com/path-to-logo.png"></iproov-me>

Close Button

You can use a custom button image by simply passing a relative link, an absolute path or a data URI to your image. We recommend providing an image in SVG format, but any web format is supported. If you don't pass an image, the default close button image will be shown.

<iproov-me
  token="***YOUR_TOKEN_HERE***"
  close_button="https://example.com/path-to-close-button.png"
></iproov-me>

SVG is recommended.

Switch Camera Button

You can use a custom camera switch button by simply passing a relative link, an absolute path or a data URI to your button. SVG is the recommended format but all web-safe image formats are supported.

<iproov-me
  token="***YOUR_TOKEN_HERE***"
  switch_camera_button="https://example.com/camera-switch-button.svg"
></iproov-me>

Custom Title

Specify a custom title to be shown. Defaults to empty string "" - hide the message entirely. You can also pass in %@ characters which will be mapped in this order to type (Enrol or Verify), user_name (the user_name you passed when generating the token), sp_name (the service provider you used to generate the token).

⚠️ iProov-generated messages are passed through our translators. If you pass a custom title, you must provide the translated version.

<!-- Set the title to a plain string -->
<iproov-me token="***YOUR_TOKEN_HERE***" custom_title="iProov Ltd" />

<!-- Hide the title, empty string, "null" or "false" can be used. Must be a string! -->
<iproov-me token="***YOUR_TOKEN_HERE***" custom_title="" />

<!-- Build dynamic string with type, user_name and sp_name-->
<!-- i.e. Below would generate "Enrol AS [email protected] TO iProov" -->
<iproov-me token="***YOUR_TOKEN_HERE***" custom_title="%@ AS %@ TO %@" />

Colors

You can customize the look and feel of the main layout by changing the following options. You can pass a literal value red, RGB rgb(230, 245, 66), a hex value #e6f542 or an RGBA value rgba(230, 245, 66, 0.8).

{
  title_text_color: "#fff",
  surround_color: "rgba(0, 0, 0, 0.4)",
  prompt_background_color: "rgba(0, 0, 0, 0.8)",
  prompt_text_color: "#ffffff",
  header_background_color: "rgba(255, 0, 0, 0.8)",
  gpa_not_ready_oval_stroke_color: "#ffffff",
  gpa_ready_oval_stroke_color: "#01ac41",
  liveness_oval_stroke_color: "#ffffff",
  liveness_completed_oval_stroke_color: "#01ac41",
}

Color option changes introduced in v4.0.0:

Color Option Description
title_text_color Adjusts the color of the text that can be added above the oval (by default there is no text here - see the custom_title option for more information)
surround_color Adjusts the color of the surroundings to the centre oval. It also affects the color of the mask in Liveness with clear or blur filter.
prompt_text_color Adjusts the color of the text visible in the centre prompt of the screen
prompt_background_color Adjusts the color of the background visible in the centre prompt of the screen
header_background_color Adjusts the color of the background visible in the top bar of the application (transparent by default)
gpa_not_ready_oval_stroke_color Stroke color for the centre oval whilst the SDK is in a "Not Ready" state in GPA
gpa_ready_oval_stroke_color Stroke color for the centre oval whilst the SDK is in a "Ready" state in GPA
liveness_oval_stroke_color Stroke color for the centre oval whilst the SDK before iProov-ing in Liveness
liveness_completed_oval_stroke_color Stroke color for the centre oval whilst the SDK after iProov-ing in Liveness

Kiosk mode is unaffected from these changes to color options. The same color options passed through from 3.6.1 and prior should be utilized instead.

Aria Live

Control screen reader priority of messages being read out. By default, this is set to assertive, this can be disabled by passing off or you can set this to polite to not override anything that's currently being read out. See official documentation here.

<iproov-me token="***YOUR_TOKEN_HERE***" aria_live="assertive"></iproov-me>

Filter

This setting controls the filter for camera preview. Can be classic, shaded (additional detail, the default), vibrant (full color).

For Liveness Assurance, two additional filters are provided: clear (no filter) and blur (starts blurred, this filter is removed when the claim progresses).

<iproov-me token="***YOUR_TOKEN_HERE***" filter="shaded"></iproov-me>

For filters clear and blur, if the camera feed does not cover the full screen, an opaque "mask" with rounded corners will be applied around the camera preview. The mask takes the color except transparency (it will always be opaque) from surround_color (see above).

Floating Prompt Rounded Corners

The floating prompt has an option to control rounded corners. Rounded corners are enabled by default (set to true); to disable rounded corners set prompt_rounded_corners to false.

<iproov-me token="***YOUR_TOKEN_HERE***" prompt_rounded_corners="false"></iproov-me>

CSP Nonce

Set the csp_nonce option to a random string to avoid requiring unsafe-inline in your style-src CSP.

Note that inline CSS is needed to provide critical styles for <iproov-me> for immediate user interaction.

<iproov-me token="***YOUR_TOKEN_HERE***" csp_nonce="P5wB82PFZt"></iproov-me>

Allow Landscape

When allow_landscape is set to true, handheld devices will be able to start in landscape orientation.

Here is the behavior:

  • For GPA and Liveness Assurance, landscape orientation is blocked in most handheld devices.
  • For Liveness Assurance, no handheld device will be able to start in landscape mode, regardless of this setting.
  • This blocking behavior is not enforced on Android tablets due to the varying position of their camera.
  • When in landscape mode in an affected UX, the iProov component will display the rotate_portrait slot.
  • Desktop devices are unaffected by allow_landscape.

See slots for details on how to override the rotate_portrait slot.

<iproov-me token="***YOUR_TOKEN_HERE***" allow_landscape="true"></iproov-me>

Show Countdown

This option only works with kiosk mode.

By setting show_countdown to true, a countdown will be shown to the user before scanning actually starts. If this is set to false, when the users face becomes properly aligned the scanner will start in 2 seconds as long as the users face is still properly aligned. By default, show_countdown is false. The example below shows how to enable the countdown.

<iproov-me token="***YOUR_TOKEN_HERE***" show_countdown="true"></iproov-me>

Enable Camera Selector

Support multiple camera selection on desktop devices by setting enable_camera_selector to true.

When enabled, the camera_selector slot, multiple_cameras event will be exposed. See Camera Selector slot for customization options. This feature is only available on desktop devices (laptops, PCs etc).

Regardless of enable_camera_selector value, if more than one camera is available and if the browser is not Firefox, a button to switch camera will be available in the application.

<iproov-me token="***YOUR_TOKEN_HERE***" enable_camera_selector="true"></iproov-me>

Disable Exterior Blur

Disables the blur and vignette around the centre oval available by default. This option is disabled by default.

This option is not compatible with the blur filter.

<iproov-me token="***YOUR_TOKEN_HERE***" disable_exterior_blur="true"></iproov-me>

Debug Logs

Logs at level info or lower are hidden, but can be exposed to the console by setting debug to true. Warnings and errors will always be emitted to the console.

<iproov-me token="***YOUR_TOKEN_HERE***" debug="true"></iproov-me>

This setting has no effect on any iProovSupport instance that's been initialized separately to the main component.

The checker itself accepts a logger argument which could be console, or any common logging library which you are free to configure to your own requirements.

Kiosk Mode

Kiosk mode still utilizes the same UX as prior SDK versions - this also applies to SDK and color options.

When deploying iProov on physically secured hardware such as laptops and desktop devices, you can enable the kiosk mode UI.

<iproov-me token="***YOUR_TOKEN_HERE***" kiosk_mode="true"></iproov-me>

ℹ️ Kiosk mode will only activate on tablets and desktops. It is automatically disabled on mobile devices.

📥 Slots

Customise the markup, styling and automatically inherit your app's styles by using slots. You can customize the preparation and result stages of iProov to seamlessly integrate it into your application.

The following examples show different ways to customize some commonly used slots.

HTML

The simplest way to add a slot is to include it within the <iproov-me> HTML tag as shown in the example below:

<iproov-me token="***YOUR_TOKEN_HERE***">
  <div slot="ready">
    <h1 class="iproov-lang-heading">Ready to iProov</h1>
  </div>
  <div slot="button">
    <button type="button">Scan Face</button>
  </div>
</iproov-me>

ℹ️ In order to style and manipulate your slots, you can add custom classes and IDs which can be accessed from your CSS and JavaScript.

JavaScript

You can also build up the slots with the <template> element and JavaScript before injecting the Web Component:

Template to be placed anywhere in your page:

<template id="iproov_template">
  <div slot="ready">
    <h1 class="iproov-lang-heading">Register your face</h1>
  </div>
  <div slot="button">
    <button>Start face scan...</button>
  </div>
</template>

JavaScript:

window.addEventListener("WebComponentsReady", function (event) {
  const iProovMe = document.createElement("iproov-me")
  iProovMe.setAttribute("token", "***YOUR_TOKEN_HERE***")
  const templateContent = document.querySelector("#iproov_template").content.cloneNode(true)
  iProovMe.append(templateContent)
  document.getElementById("your-container-id").appendChild(iProovMe)
})

With jQuery, the entire Web Component can be injected with slots using HTML syntax, for example:

window.addEventListener("WebComponentsReady", function (event) {
  const iProovMe = $('<iproov-me token="***YOUR_TOKEN_HERE***"></iproov-me>')

  iProovMe.append('<div slot="ready"><h1 class="iproov-lang-heading">Register your face</h1></div>')
  iProovMe.append('<button type="button" slot="button">Start face scan...</button>')

  $("#your-container-id").append(iProovMe)
})

To integrate with our localization feature, use special class names in your slotted content:

  • Headings must use .iproov-lang-heading
  • Supplementary terms (message, reason etc) must have .iproov-lang-term

Example: The below text will be swapped with the correctly localized strings when displayed:

<div slot="passed">
  <h3 class="iproov-lang-heading">Passed</h3>
  <div class="iproov-lang-term">You have iProoved successfully</div>
</div>

⚠️ When customizing any the button and grant_button slots, the slot must contain a <button> element to ensure interactivity. These buttons may be disabled by the SDK on component load while we configure according to the passed in token.

The following is the complete list of slots can be used with the <iproov-me> web component and have associated events:

Slot Description
button * Element that a user taps or clicks on to launch into fullscreen and start iProov
camera_selector ** Label and dropdown populated with available cameras, if multiple cameras are detected.
canceled State displayed to the user when they exit fullscreen before iProoving
error State displayed to the user in the event of an error
failed State displayed to the user when the user failed iProov
grant_button * Element that user taps or clicks to grant camera permission
grant_permission State displayed to the user when camera or motion permission is unknown and not blocked
no_camera State displayed to the user when there is no camera
passed State displayed to the user when the user passed iProov
permission_denied State displayed to the user when camera permission has been blocked
progress State displayed to the user when streaming has completed and iProov is processing the result
ready State displayed to the user when the component is ready to start the main iProov user journey
rotate_portrait *** State displayed to the user when a handheld device is not in portrait orientation
unsupported State displayed to the user when their browser is not supported

* Interactive elements such as buttons that start full screen and cameras require a user gesture enforced by the browser. Using JavaScript to apply clicks is not recommended within your user journey and may cause unexpected errors or performance degradation. See our User Gestures Wiki for more details.

** Visible and managed when camera selection is enabled. A select menu with the class iproov-camera-selector must be present within your slots markup. An error will be thrown if this cannot be found.

*** See allow landscape option which controls the behaviour of the rotate_portrait slot and details on how to override.

📆 Events

There are a set of CustomEvents that can be used to integrate bespoke functionality. Events are bound directly to the <iproov-me> element after the WebComponentsReady event is called on the window.

Details

Every event has a detail property which contains data relating to that event. The token is present for every event:

{
  "token": "Your Generated Token",
  "is_native_bridge": boolean
}

The available events are detailed below with any extra properties that are supplied:

Event Extra Properties Description
canceled feedback, reason User has canceled iProov by exiting fullscreen
connecting None The SDK is connecting to the server. You should provide an indeterminate progress indicator to let the user know that the connection is taking place.
connected None The SDK has connected. You should hide any progress indication at this point.
error feedback, reason iProov encountered an error while processing the authentication
failed type, passed, feedback, reason Authentication was unsuccessful, the user needs to try again
multiple_cameras * devices, device_selector, slot, label If enable_camera_selector is true returns an array of devices if more than 1 video device is detected
no_camera feedback, reason No video input was detected on the user's device
passed type, feedback, reason, passed Authentication was successful, the result can now be validated
permission reason Camera permission is unknown & not blocked, show permission
permission_denied feedback, reason User has blocked access to the camera
progress progress, message iProov has published a progress update for the authentication
ready None iProov has initialized successfully and has camera permission
started None User has started iProov by launching into fullscreen
streaming None User has started streaming. The client remains in fullscreen.
streamed None User has finished streaming and the client has exited fullscreen (Not guaranteed to fire every time due to a possible fast failure or any errors that can occur and should be handled within your event handlers accordingly)
unsupported feedback, reason Browser does not support using iProov

* See Multiple Camera Example for an example demonstrating how a camera selection feature could be implemented.

Properties of the event's detail payload:

Property Events Description
token All The token associated with the authentication attempt
type (†) passed, failed The type of authentication (enrol or verify)
passed passed, failed Boolean value whether the result passed or failed
frame (†) (*) passed, failed An ImageData from the scanning process
progress progress A percentage (between 0 and 100) representing the progress
message progress A user-friendly description of the current progress stage
feedback canceled, failed, error, unsupported A fixed feedback code for making logical decisions
reason canceled, failed, error, unsupported An English description of the reason for the event
slot multiple_cameras The relevant slot for the event, for ease of use
devices multiple_cameras Array of suitable InputDevices for imagery capture
device_selector multiple_cameras The multiple camera selection <select> element
is_native_bridge All Boolean value if event originates from the native bridge
  • The frame property is for UI/UX purposes only and is only available if enabled on your service provider and token configuration. Imagery upon which authentication may later rely must be obtained from the token validate endpoint by a secure server-to-server call.
  • The type and frame properties are not available when running in Native Bridge mode.

Feedback Codes

When the SDK exits, we use a set of feedback codes to expose more information about the exit reason for internal tracking.

These codes can be used to tailor guidance for the user to try again in the case of permission_denied, canceled and failure events.

We always store the SDK exit feedback code against the transaction for reporting and quality improvement purposes.

In all events, corresponding reason field can be displayed to the user.

Failure Feedback Codes for Genuine Presence Assurance

Feedback Reason
eyes_closed Keep your eyes open
face_too_far Move your face closer to the screen
face_too_close Move your face farther from the screen
misaligned_face Keep your face in the oval
multiple_faces Ensure only one person is visible
obscured_face Remove any face coverings
sunglasses Remove sunglasses
too_bright Ambient light too strong or screen brightness too low
too_dark Your environment appears too dark
too_much_movement Please keep still
unknown Try again

Failure Feedback Codes for Liveness Assurance

⚠️ This declares support for the new codes in the SDK. It does NOT define when the new codes will be produced by our servers. This capability will be delivered in the future for Liveness Assurance.

Feedback Reason
eyes_closed Keep your eyes open
multiple_faces Ensure only one person is visible
obscured_face Remove any face coverings
sunglasses Remove sunglasses
too_bright Ambient light too strong or screen brightness too low
too_dark Your environment appears too dark
unknown Try again

Error Feedback Codes

Error feedback codes apply for both GPA and Liveness Assurance

Feedback Reason
unknown Try again
client_camera There was an error getting video from the camera
client_error An unknown error occurred
error_asset_fetch Unable to fetch assets
error_camera The camera cannot be started for unknown reasons
error_camera_in_use The camera is already in use and cannot be accessed
error_camera_not_supported The camera resolution is too small
error_camera_permission_denied The user denied our camera permission request
error_device_motion_denied The user denied our device motion permission request
error_device_motion_unsupported Your device does not seem to fully report device motion
error_fullscreen_change Exited fullscreen without completing iProov
error_invalid_token The token is invalid
error_network Network error
error_no_face_found No face could be found
error_not_supported The device or integration isn't able to run the Web SDK
error_server An error occurred when communicating with iProov's servers
error_token_timeout The token was claimed too long after being created
error_too_many_requests The service is under high load and the user must try again
error_user_timeout The user started the claim but did not stream in time
integration_unloaded The SDK was unmounted from the DOM before it finished
sdk_unsupported The SDK has passed end of life and is no longer supported

Listeners

We recommend the integrator listens for at least the ready and unsupported events because one of them will always be called, so you can determine if iProov is supported or not:

document.querySelector("iproov-me").addEventListener("ready", function (event) {
  console.log("iProov is ready")
})
document.querySelector("iproov-me").addEventListener("unsupported", function (event) {
  console.warn("iProov is not supported: " + event.detail.reason)
})

Because all event details share the same structure, they can be handled by a single function if desired:

const iProovMe = document.querySelector("iproov-me")
iProovMe.addEventListener("ready", iProovEvent)
iProovMe.addEventListener("started", iProovEvent)
iProovMe.addEventListener("canceled", iProovEvent)
iProovMe.addEventListener("streaming", iProovEvent)
iProovMe.addEventListener("streamed", iProovEvent)
iProovMe.addEventListener("progress", iProovEvent)
iProovMe.addEventListener("passed", iProovEvent)
iProovMe.addEventListener("failed", iProovEvent)
iProovMe.addEventListener("error", iProovEvent)
iProovMe.addEventListener("unsupported", iProovEvent)
iProovMe.addEventListener("permission", iProovEvent)
iProovMe.addEventListener("permission_denied", iProovEvent)

function iProovEvent(event) {
  switch (event.type) {
    case "canceled":
    case "error":
    case "unsupported":
    case "permission":
    case "permission_denied":
      console.warn("iProov " + event.type + " - " + event.detail.reason)
      break
    case "progress":
      console.info(event.detail.message + " (" + event.detail.progress + "%)")
      break
    case "passed":
    case "failed":
      console.log("iProov " + event.detail.type + " " + event.type)
      break
    default:
      console.log("iProov " + event.type)
  }
}

If you're using jQuery, you can attach to all the events in one go:

$("iproov-me").on("ready started canceled streamed progress passed failed error unsupported", iProovEvent)

🌎 Localization

The Web SDK supports a multitude of languages with English being the default. To provide strings in another language, you can supply language overrides as JSON. Language files use the same structure.

You can customize the language by supplying the language attribute to your iProov component. The language value must be valid JSON and passed as a string.

Any value not supplied will fall back to the English default.

Override language strings

window.addEventListener("WebComponentsReady", (event) => {
  const iProovMe = document.createElement("iproov-me")
  iProovMe.setAttribute("token", "***YOUR_TOKEN_HERE***")

  const customLanguage = {
    passed: "You passed!",
    prompt_connecting: "It's loading...",
  }
  element.setAttribute("language", JSON.stringify(customLanguage))

  // inject iproov element into page
  document.getElementById("your-container-id").appendChild(iProovMe)
})

Load language file

window.addEventListener("WebComponentsReady", async (event) => {
  async function getLanguage(path) {
    const response = await fetch(path)
    const language = await response.text()

    return language
  }

  const iProovMe = document.createElement("iproov-me")
  iProovMe.setAttribute("token", "***YOUR_TOKEN_HERE***")

  const languageFile = "" // local or external path to language file
  const customLanguage = await getLanguage(languageFile)
  element.setAttribute("language", customLanguage)

  // inject iproov element into page
  document.getElementById("your-container-id").appendChild(iProovMe)
})

There are also some framework specific examples on the Angular and React wiki pages.

Right-to-left direction

A language ISO code is read from the value of the key language_file in the language file (e.g. ISO code en for language_file value en-GB).

If the ISO code corresponds to one of the following languages, the right-to-left direction will be automatically applied.

ISO Language Code Language Name
ar Arabic
arc Aramaic
dv Divehi
fa Persian
ha Hausa
he Hebrew
khw Khowar
ks Kashmiri
ku Kurdish
ps Pashto
ur Urdu
yi Yiddish

🌐 Browser support

iProov's Web SDK makes use of the following technologies:

iProov Biometrics Web SDK requires access to a front facing camera, WebGL, WebAssembly and the ability to enter full screen. A network connection is required that allows WebSockets. Provided there's a suitable webcam available, most modern desktop browsers fall within these criteria.

Of the mainstream browsers that support the above technologies, we support the last two releases. We feature detect capabilities and provide support for Web Components through polyfills. If we're sure our experience won't work well, due to misconfigured permissions policy or iframe settings, we mark the device as unsupported.

For known issues, see here.

We officially support only the following browsers. Please note that browsers not included in the list may not guarantee an optimal experience when utilizing the iProov Biometrics Web SDK.

Safari
Platform
Safari
Safari
Chrome
Chrome
IE / Edge
Edge
Firefox
Firefox
Opera
Opera
Samsung
Samsung
Windows N/A ✔️ ✔️ ✔️ ✔️ N/A
MacOS ✔️ * ✔️ ✔️ ✔️ * ✔️ N/A
iOS ✔️ ✔️ ✔️ ✔️ * ✔️ N/A
Android N/A ✔️ ✔️ ✔️ * ✔️ ✔️

* See known issues for more details

ℹ️ If the device attempting to iProov doesn't meet the minimum requirements, the unsupported event is emitted. See the events section for more details.

Support checker

For complex use cases, we recommend separately deploying the lightweight iProovSupport support checker component ahead of the iProov user journey to ensure that users have the correct hardware and software to use the Web SDK successfully.

Key points:

  • You don't need to create a token to use the support checker, you just need to choose the assurance type.
  • The checker tests the user's device software, hardware and optionally permissions, but also the feature policy of the webpage containing the Web SDK.
  • If the user device is unsupported, the integrator can send the user down an alternative journey.

Integrators can and should code split their bundle so that users don't need to download an entrypoint that contains the full component until device support has been established, so that the Web SDK only is downloaded when necessary.

Example usage when using a bundler that treats UMD like ESM:

import { iProovSupport } from "@iproov/web-sdk/iProovSupport.js"
const optionalLogger = console
const supportChecker = new iProovSupport(optionalLogger)

Example usage without a bundler, inside a vanilla ES6 / ESM environment:

// ESM without a bundler:
import "@iproov/web-sdk/iProovSupport.js
const supportChecker = new window.iProovSupport.default()

Example usage for script tag integrators in test:

iProovSupport is available on the window object via window.IProov once included:

const supportChecker = new window.IProov.IProovSupport()

iProovSupport can check for the required APIs on the user's browser, using either event or Promise based APIs:

How to use iProovSupport:

⚠️ The assurance_type config option was removed from the Support Checker in v5 as motion permissions are now required for all assurance types.

const loggger = console // optionally pass in a logger conforming to JS console API
const supportChecker = new iProovSupport(loggger)
// Event based:
supportChecker.addEventListener("check", (event) => {
  const { supported, granted, is_native_bridge } = event.detail
  if (supported === false) {
    // go to fallback UX
  }
  if (supported && granted) {
    // full permission and granted, we can definitely iProov!
    if (is_native_bridge) {
      // if native bridge mode has been detected then permission checks have been circumvented as they aren't needed
    }
  }
  if (supported && granted === null) {
    // browser API support, but we haven't run a permission check (see checkWithPermission)
  }
  if (supported && granted === false) {
    // browser API support, but camera access denied - try again or advise user before proceeding
  }
})

// Promise based:
const { supported, granted, is_native_bridge } = await supportChecker.check()

...or to carry out a complete lightweight check for camera access with user interaction, this can pre-set the required permissions for iProoving, save some bandwidth, and provide a cleaner user journey if camera access isn't possible:

const supportChecker = new iProovSupport()
document.querySelector("#check-button").addEventListener("click", async () => {
  const { supported, granted } = await supportChecker.checkWithPermission()
})

If .checkWithPermission() is executed when permission has already been granted and cached within the browser, further permission checks are not required; we can tell if permission has been granted using a soft .check().

Note that browsers have varying regimes to protect against device fingerprinting and to ensure user privacy. Repeated calls to getUserMedia or the Permissions API can result in prompt blockage, or the redaction of media devices, which can return inaccurate results. Our advice is therefore to avoid running multiple checks, in quick succession, on the same page. Therefore, please avoid automatic or accidental repeat calls to check or checkWithPermission, especially without user interaction.

The following events can be emitted from iProovSupport:

const supportChecker = new iProovSupport()
function onCheckResult(event) {
  const {
    /** @var boolean */
    supported,
    /** @var boolean */
    granted,
    /** @var array */
    tests,
    /** @var boolean|undefined */
    is_native_bridge,
  } = event.detail
  console.debug("Checks run:", tests)
  if (supported) {
    if (is_native_bridge) {
      console.debug("User can iProov with the Native SDK")
    } else {
      console.debug("User can iProov with the Web SDK")
    }
    if (granted) {
      console.debug("User has granted permission for camera access")
    } else {
      console.debug("Prompt the user for camera access permission")
    }
  } else {
    console.error("Browser does not support the Web SDK")
  }
}
const onUnsupported = ({ supported, tests }) => ({})
const onPermissionWasGranted = ({ tests }) => ({})
const onPermissionWasDenied = ({ tests }) => ({})
supportChecker.addEventListener("check", onCheckResult)
supportChecker.addEventListener("unsupported", onUnsupported)
supportChecker.addEventListener("granted", onPermissionWasGranted)
supportChecker.addEventListener("denied", onPermissionWasDenied)
// The `tests` object consists of the following options:
// null if unchecked, true if supported, false if not supported:
const possibleTests = {
  videoInput: null,
  wasm: null,
  userMedia: null,
  mediaStreamTrack: null,
  frontCamera: null,
  fullScreen: null,
  webgl: null,
  localStorage: null,
}

The is_native_bridge property will be exposed on support checker events if the checker detects that iProovNativeBridgeInfo exists within the global scope. This variable is injected automatically by the native SDK. In this case, the browser support and permission checks are cast to true as we won't be using the browser to iProov.

Using the support checker is the best and canonical way to detect whether the user's browser supports the Web SDK.

🕸 WebViews

Web Views are compatible with the iProov Web SDK. However, there are some considerations to take into account when integrating iProov into a WebView based app.

  • Native Bridge mode is mandatory for iOS WKWebView based apps until iOS 14.3, when Apple enabled support for getUserMedia. In all other cases, the unsupported event fires. All iOS versions after this are supported.
  • In Android WebView apps, it is possible to use the Web SDK directly provided that your app correctly allows fullscreen mode. This ensures the user interface is correctly rendered.

Android WebView

These WebView examples demonstrate how to ensure fullscreen is allowed and configured correctly inside your Android app:

iOS WebView

For iOS, the WKWebView is the recommended Web View to use. Below is an example but please be aware the code is a simple example and has not been tested thoroughly.

import UIKit
import WebKit

final class WKWebViewViewController: UIViewController, WKUIDelegate {
    var webView: WKWebView!

    override func loadView() {
        let webConfiguration = WKWebViewConfiguration()
        webConfiguration.allowsInlineMediaPlayback = true
        webView = WKWebView(frame: .zero, configuration: webConfiguration)
        webView.uiDelegate = self
        view = webView
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let myURL = URL(string: "ENTER_YOUR_URL_HERE")
        let myRequest = URLRequest(url: myURL!)
        webView.load(myRequest)
    }
}

🌉 Native bridge

If integrating iProov into a WebView based app, why not take advantage of our Native SDKs?

Native SDK integration is possible with one line of code in a single location in your app's codebase. The Web SDK then automatically detects and switches to Native Bridge mode if available.

Native SDK integration guides

For more information on using iProov Web within a native WebView based app, see the following Wiki pages:

Please note: Web SDK v5 and onwards is only compatible with iOS SDK v11 and Android SDK v9.

Customization

The native_sdk_options setting accepts a base64 encoded JSON object of iProov Native SDK options as defined in the iOS and Android documentation:

// Example shows passing title_text_color and a title to the Native SDK
iProovMe.setAttribute("native_sdk_options", btoa(JSON.stringify({ title_text_color: "#2D2D2D", title: "NB Test" })))

Note: Native SDK implementations can only accept colour values in #RRGGBB and #AARRGGBB formats.

Filters

When configuring the filter options, you will need to pass these in as objects via the native_sdk_options option. See the related Android SDK filter docs or iOS SDK filter docs for more details on configuring filters.

// Example shows passing a filter to the Native SDK as natural and clear
iProovMe.setAttribute("native_sdk_options", btoa(JSON.stringify({ filter: { name: "natural", style: "clear" }})))

🔳 Iframe integrations

Integrations via iframes are supported by the Web SDK but please note that you must declare that camera and fullscreen permissions are allowed. Any additional permissions you may require must be separated by a semi-colon ;. Permissions accelerometer;gyroscope;magnetometer; are required.

Please note the following:

  • Iframe integrations are not supported in iOS versions 14 and lower due to iOS not supporting motion permissions in iframes. All devices attempting to run iProov will be marked as unsupported.
  • Due to browser policies, it is also required to pass allowfullscreen="true" as well as the allow attribute.
  • Its important to ensure the iframe is expanded to 100% width and height. See an example of this below.
<iframe
  style="width: 100vw; height: 100vh; border: 0"
  src="https://your-iframe-target.example"
  allow="camera;fullscreen;accelerometer;gyroscope;magnetometer;"
  allowfullscreen="true"
></iframe>

❌ Manually canceling a transaction

Transactions can be manually canceled by calling the cancelTransaction function on the iproov-me component. This feature is useful when integrators want to abort the user journey without waiting for the transaction to timeout. This must be called before removing the iproov-me element from the page.

// an example showing how to cancel a transaction 20 seconds after the connected event is fired
const iProovMe = document.createElement("iproov-me")
// add token and other options...
const cancelAfterTimeoutFromConnected = (event) => {
  setTimeout(function () {
    iProovMe.cancelTransaction() // error_transaction_canceled will be triggered
  }, 20 * 1000)
}
iProovMe.addEventListener("connected", cancelAfterTimeoutFromConnected)
// inject element into page...

🚹 Accessibility

Screen reader

For a better experience with screen readers, all elements in the integration page other than iProov should be temporarily hidden from accessibility tools during the scan.

The following code is an example to manage the visibility of HTML elements outside iProov. In this example, elements to hide during iProov scan are identified with the CSS class .hide-in-fs:

const ELEMENTS_TO_HIDE_IN_FS = document.querySelectorAll(".hide-in-fs")
iProov.addEventListener("started", () => {
  ELEMENTS_TO_HIDE_IN_FS.forEach((el) => el.setAttribute("aria-hidden", "true"))
})
const EXIT_EVENTS = ["canceled", "error", "failed", "passed"]
EXIT_EVENTS.forEach((eventName) => {
  iProov.addEventListener(eventName, () => {
    ELEMENTS_TO_HIDE_IN_FS.forEach((el) => el.removeAttribute("aria-hidden"))
  })
})

✨ Image Quality Enhancement

In Liveness Assurance, higher quality imagery can be collected and returned via the validate frame. This feature can be toggled on - please reach out to Customer Success to enable this.

❓ Help & support

You may find your question answered on our Wiki pages.

For further help with integrating the SDK, please contact [email protected].

Known issues

  • We do not support tiny video feeds, and will re-prompt the user to provide a different camera
    • In Firefox this will present the user with the camera prompt again without any further guidance
  • When multiple video devices are attached using Firefox on desktop, permission is requested on each button click
  • iOS WebView based browser support is currently whitelisted to those with the most support
  • MacOS Safari 15.0 is marked as unsupported until further notice due to several regressions out of our control:
  • Flickering can occur while cropping with clear and blur SDK filters (only observed on MacBook Pro M2 with an external monitor)
  • Native Bridge integrations can only accept colour inputs in #RRGGBB and #AARRGGBB formats