Performance Analysis for Integrating Biometrics

Due to the performance limitation of using a single biometric, many researchers have been investigating ways to integrate multiple biometrics for the purpose of authentication. To this end, there have been numerous articles on promoting multiple biometric identifiers. It is thus important to know when integrating improves the performance and when it does not. This research focuses on integrating biometrics at the decision level. In this article, the formulas are first derived for the probabilities of a False Accept and a False Reject when n Biometric tests are combined. The conditions are then obtained for performance improvement and degradation of combing two biometric identifiers. To the end, some other interesting results of integrating biometric solutions are also presented.

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