10. A system in accordance with claim 9 , said authentication system being further configured to calculate an equal error rate when the minimum genuine matching score is equal to or less than the maximum imposter matching score.
9. A system in accordance with claim 8 , said authentication system being further configured to: update the genuine matching score distribution with at least one genuine matching score generated during a matching transaction; and update the imposter matching score distribution with at least one imposter matching score generated during the matching transaction.