Determination of suitable boundary in biometric authentication

  • Authors:

  • Miloslav Hub

  • Affiliations:

  • Institute of System Engineering and Informatics, Faculty of Economics and Administration, University of Pardubice, Pardubice, Czech Republic

  • Venue:
  • AIC'06 Proceedings of the 6th WSEAS International Conference on Applied Informatics and Communications
  • Year:
  • 2006

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Abstract

This article is focused on a problem of setting suitable boundary in the biometric authentication. The biometric authentication is somewhat different from the other kinds of authentication. While password matches relevant template which are saved in database or password does not match, biometric characteristics are somewhat stochastic. It means biometric characteristics (e.g. voice) can never absolutely match to their relevant templates. For this reason the system analyst has to set the strictness of similarity between submitted biometric characteristics and relevant templates. In this case the subject is considered as a valid user, not as an impostor. Non-Bayes tasks of a statistical decision seem to be a quite suitable tool for solving this problem.