System und Verfahren zur biometrischen Authentifizierung eines Benutzers mit einer Chipkarte

A system and method for authenticating a smart card user (54) at a reader device (64) makes use of an application (58) on a smart card microprocessor (60) on which information fields (56) relating to biometric information for the user and a table of predefined probability of occurrence values for user authentication is stored. The smart card (62) and a biometric sample for the user is presented to the reader device (64), and an application associated with the reader device automatically authenticates the user base on a match level between the stored biometric information and the presented biometric sample according to a desired probability of occurrence value from the stored table. Alternatively, the user (54) is automatically authenticated by an application (58) on the smart card microprocessor (60). The reader device reads the presented biometric sample, automatically presents what is read to the smart card application, and the smart card application then authenticates the user according to the threshold match score from the stored table that corresponds to the desired probability of occurrence value.