The Wayback Machine - https://web.archive.org/web/20160421034708/https://developer.android.com/reference/android/hardware/fingerprint/package-summary.html
Android APIs
Added in API level 23
package

android.hardware.fingerprint

Classes

FingerprintManager A class that coordinates access to the fingerprint hardware. 
FingerprintManager.AuthenticationCallback Callback structure provided to authenticate(CryptoObject, CancellationSignal, int, AuthenticationCallback, Handler). 
FingerprintManager.AuthenticationResult Container for callback data from authenticate(CryptoObject, CancellationSignal, int, AuthenticationCallback, Handler). 
FingerprintManager.CryptoObject A wrapper class for the crypto objects supported by FingerprintManager. 
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