Fingerprint authetication of multiple users

Question

I am a beginner in android development.I want to create an application having Finger authentication.I want to register multiple users(50) finger prints using finger sensor of phone.Also i want to authenticate it when user logins.Can anyone help us?

Answer 1

As per Nexus FAQs

Your fingerprint data is stored securely and never leaves your Pixel or Nexus phone. Your fingerprint data isn't shared with Google or any apps on your device. Apps are notified only whether your fingerprint was verified.

which explains very well that you can use fingerprints for verification purpose only. Its just an alternative to any app lock available in marketplace.

Answer 2

FingeprintManager only has these 3 features:

authenticate : for authenticating user

hasEnrolledFingerprints : Determine if there is at least one fingerprint enrolled.

isHardwareDetected : Determine if fingerprint hardware is present and functional.

you can check FingerPrintManager docs here : https://developer.android.com/reference/android/hardware/fingerprint/FingerprintManager.html