In the past, if you wanted to send money via Google Pay you’d be prompted to use an old school PIN pattern to authenticate the transfer. Starting with version 2.100 Google is finally adding support for fingerprints and face authentication for money transfers thanks to Android 10’s biometric API.
The feature is currently only available for Android 10 devices and is found in the Sending money settings section of the app.
Previously you were only limited to using your Google Account Pin but now can switch to biometric authentication instead. Google’s own Pixel 4 lineup relies on facial unlock for authentication so this new addition will certainly be useful for owners of that one.