To improve the security of real identity management systems, many application now uses biometricsbased personal authentication systems. Biometric physiological traits such as fingerprint, face and iris or behavioral traits such as speech and handwriting are often engaged. As a result of widespread deployment of biometric systems in many applications, there are growing concerns about the security and privacy of biometric technology. Public acceptance of biometrics technology will depend on the ability of system developers to convince the users that these systems are robust with low error rates, and are tamper proof. This research focuses on likely areas on which biometric system can be hacked because, unlike passwords and tokens, compromised biometric templates cannot be revoked and reissued. In this study we present categorization of various weaknesses points of a biometric system and countermeasure approaches that has been propounded.
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