1. A method of filtering a master database of enrolled biometric representations to generate a subset of enrolled biometric representations against which a presented biometric is authenticated, said method comprising: matching individual enrolled biometric representations included in the master database of enrolled biometric representations against a filter set and generating a score for each of the matches, the filter set including a plurality of biometric representations; generating vectors of the scores for each of the matched enrolled biometric representations; associating the individual enrolled biometric representations with a corresponding generated vector; and using the generated vectors in an authentication request to determine a subset of the enrolled biometric representations against which a presented biometric is authenticated.