Facial Authentication in Xamarin Android

Question

I am trying to add an option in my Xamarin Android application to authenticate using Face registered in the Android settings.
I already have Fingerprint Authentication implemented but I can't seem to find any API exposed by Xamarin for Facial Authentication. And the API exposed by native Android seems to handle Biometric Authentication in general, and does not expose a separate API for Facial Authentication.

Does anyone have more information on this?

Please note that I am not looking for Facial Recognition - All the solutions I have found so far talks about Recognition and not Authentication.

Answer 1

Hello,

Welcome to Microsoft Q&A!

From Android 10 (API level 29) we can use AndroidX Biometric Library to authenticate , the library does not expose a separate API for Facial Authentication because it is not responsible for targeting specific form-factors . If a device supports facial biometrics, then you will see a prompt for facial authentication; if your device supports fingerprint biometrics, then you will see a prompt for fingerprint authentication; and so on.

Please check details

https://medium.com/androiddevelopers/migrating-from-fingerprintmanager-to-biometricprompt-4bc5f570dccd
https://android-developers.googleblog.com/2019/10/one-biometric-api-over-all-android.html

Thank you.

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