A method of testing the performance of a biometric authentication system includes conducting an initial biometric authentication transaction for an individual using data associated with the individual, and generating an initial result for the initial transaction with the biometric authentication system. Moreover, the method includes obtaining additional data associated with the individual when the additional data is required for conducting a subsequent biometric authentication transaction or after randomly determining that the subsequent transaction is to be conducted. Furthermore, the method includes conducting the subsequent transaction, generating a subsequent result for the subsequent transaction with the biometric authentication system, and updating cumulative performance records based on the initial and subsequent results. The method also includes generating a summary on a temporal or quantifiable basis that includes the cumulative performance records, and determining the performance of the biometric authentication system using the cumulative performance records or the summary.