Patent ID: 8799167

Claim:
A biometric authentication system, comprising: a biometric sensor comprising a transducer configured to capture biometric information using one or more physical sensing parameters derived from biometric data; wherein the one or more physical sensing parameters comprising focus, resolution, or contrast parameters of an imaging device; a calibration component configured to calibrate the transducer during an enrollment procedure such that the one or more physical sensing parameters have respective values corresponding to a single person; a storage component configured to store template information of only the single person, wherein the template information is captured by the calibrated transducer during the enrollment procedure: and a processor configured to compare biometric information captured by the calibrated transducer using the one or more physical sensing parameters having respective values corresponding to the single person, during an authentication procedure subsequent to the enrollment procedure, with the stored template information of the single person to determine whether to authenticate a user; wherein the respective values of the physical sensing parameters remain fixed following the enrollment procedure and are therefore unchanging between the enrollment procedure and the authentication procedure.