15. A method of authentication comprising: conducting matching transactions between an authentication biometric template and enrollment biometric templates and between the authentication biometric template and imposter biometric templates with a biometric authentication system; updating a matching score distribution and a imposter score distribution with results generated during said conducting step; determining whether a minimum imposter matching score is greater than a maximum genuine matching score; and confirming an identity of an individual when the minimum imposter score is greater than the maximum genuine matching score.
15. A method of authentication comprising: conducting matching transactions between an authentication biometric template and enrollment biometric templates and between the authentication biometric template and imposter biometric templates with a biometric authentication system; updating a matching score distribution and a imposter score distribution with results generated during said conducting step; determining whether a minimum imposter matching score is greater than a maximum genuine matching score; and confirming an identity of an individual when the minimum imposter score is greater than the maximum genuine matching score. 16. A method of authentication in accordance with claim 15 , further comprising calculating an equal error rate when the maximum genuine matching score is at least equal to the minimum imposter matching score.