In the last decade, smart cards are increasingly being used as a form of identification and authentication. One inherent problem with smart cards, however, is the possibility of loss or theft. Current options for securing smart cards against unauthorized use are primarily restricted to passwords. Passwords are easy enough for others to steal so that they do not offer sufficient protection. This has promoted interest in biometric identification methods. Biometrics has become increasingly popular as powerful and cost-effective platforms for the development of statistical and mathematical methods applicable to data security.