BiometricManager A class that contains biometric utilities. 
BiometricPrompt A class that manages a system-provided biometric prompt. 
BiometricPrompt.AuthenticationCallback Callback structure provided to BiometricPrompt
BiometricPrompt.AuthenticationResult Container for callback data from BiometricPrompt.authenticate(PromptInfo) and BiometricPrompt.authenticate(PromptInfo, CryptoObject)
BiometricPrompt.CryptoObject A wrapper class for the crypto objects supported by BiometricPrompt. 
BiometricPrompt.PromptInfo A class that contains a builder which returns the BiometricPrompt.PromptInfo to be used in BiometricPrompt.authenticate(PromptInfo, CryptoObject) and BiometricPrompt.authenticate(PromptInfo)
BiometricPrompt.PromptInfo.Builder A builder that collects arguments to be shown on the system-provided biometric dialog.