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The Proof widget runs inside a browser container on mobile. Different containers have different compatibility with Apple Pay, Google Pay, and the verification camera.

iOS

Camera permission (verification)

The identity-verification liveness check requires camera access. Add to your Info.plist:

WKWebView setup

If embedding the widget inside a WKWebView:

Apple Pay compatibility

If Apple Pay matters for your users, make sure the widget opens in Safari or WKWebView — not in a Chromium-based in-app browser.

Android

Use Chrome Custom Tabs for the best compatibility. Google Pay works, the camera works, and no extra configuration is needed.

WebView setup

If you use WebView instead of Chrome Custom Tabs: AndroidManifest.xml:
WebView settings:

Google Pay compatibility

Google Pay does not work in Android WebView. If your users need Google Pay, use Chrome Custom Tabs.

Compatibility summary