androidandroidxandroid-biometric-promptandroid-biometric

What is the USE_BIOMETRIC permission needed for?

The documentation for the USE_BIOMETRIC permission says

Allows an app to use device supported biometric modalities.

But AndroidX's BiometricPrompt works without this permission. So what exactly is it needed for?

Solution

  • Works because the library already declares it in its own manifest:

    https://android.googlesource.com/platform/frameworks/support/+/63add6e2590077c18556dcdd96aa5c6ff68eb13b/biometric/biometric/src/main/AndroidManifest.xml