verifyBiometric abstract method Null safety

void verifyBiometric(
  1. BiometricUserVerificationContext context,
  2. BiometricUserVerificationHandler handler
)

The user verification interaction.

In the case of the registration the user must provide credentials again as required by the FIDO UAF protocol. In the case of the authentication, this is invoked for the user to provide credentials. In the case of the biometric authenticator, since the UI management is delegated to the operating system, the verifyUser method will not be invoked when a recoverable error occurs: the operating system will inform the end-user of the problem that happened. This implies that verifyUser is only invoked once when using the biometric authenticator.

Params:

  • context: the object providing the information required for the verification process.
  • handler: the object that must be notified with the result of the interaction.

Implementation

void verifyBiometric(
  BiometricUserVerificationContext context,
  BiometricUserVerificationHandler handler,
);