Skip to main content
Youverify provides first-party SDKs for web browsers, Android, and iOS, offered as three services (Anti-Deepfake Liveness, Document Capture, and Fraud Insights), that let you embed biometric liveness detection and document capture directly inside your product. Rather than redirecting users to a hosted page, the SDK flows run natively within your app — giving you full control over the UI while Youverify handles the fraud-detection logic.

​
SDK services

The SDKs are organized by the service they provide. Each service has its own guide for the platforms it supports.

Anti-Deepfake Liveness

Confirm a live person is present, not a photo, video or deepfake. Web, Android and iOS.

Document Capture

Let users photograph a government-issued ID from inside your web app. Mobile apps can use a WebView.

Fraud Insights

Collect passive device and behavioural signals to enrich the risk score. Runs in the background on all platforms.
Anti-Deepfake Liveness needs a server-side session token. See Session tokens. Document Capture and Fraud Insights only need your Public Merchant Key.

​
How SDK flows work

Anti-Deepfake Liveness uses a two-step security pattern:
1

Generate a session token server-side

Your backend calls the Youverify API (using your secret API key) to generate a short-lived session token. Your secret key never leaves your server.
2

Initialize the SDK client-side with the token

Pass the session token to the SDK on your web page or mobile app. The SDK uses the token — not your secret key — to authenticate with Youverify’s verification infrastructure.
Never embed your secret API key in a web page, Android app, or iOS app. It will be exposed to end users. Always generate session tokens server-side and pass them to the SDK.

​
Two types of session token

See Session Tokens for full request and response details on both endpoints.

​
Credential reference

Your public merchant key is the credential you pass to the SDK constructor. It is a read-only identifier scoped to starting sessions and is safe to embed in your web or mobile app. Your API secret key must stay on your server. To retrieve your public merchant key, see Authentication.

​
Use cases

Use the Android, iOS, or Web SDK to run an anti-deepfake liveness check as part of your customer onboarding flow. The SDK prompts the user to perform a head-movement task (complete the circle, blink, yes/no) to confirm a live human is present.
Use the Document Capture SDK to photograph a government-issued ID (passport, national ID card, driver’s licence) from within your app. The captured image is automatically submitted for extraction and verification.
The Fraud Insight SDK collects passive device and behavioural signals during the session, enriching the risk score computed by the Youverify platform without adding friction for the user.