Facebook recently added fingerprint reader support to WhatsApp and is currently preparing another biometric authentication method.
Craftsmen from the WABetaInfo resource “dig deeper” in the new beta version of the Android application and noticed one innovation there. Instead of the “fingerprint lock” item, the “biometric lock” item appeared. That is, you can also enter the program using Face Unlock. This is especially true for owners of Pixel 4 smartphones, as well as other devices that do not have a fingerprint scanner but have sensors for scanning a face. Apparently, the new function will work based on the Android BiometricPrompt API.
It is still unknown when the innovation will appear in the stable version of the application. It should be added in future updates.