Abstract: There have been several studies on the different kinds of biometrics authentication systems which uses personís physiological and behavioral characteristics. So authentication serves first step towards security concern. Biometric have widely used over existing methods due their significant response for secure identification. Biometrics is the preventive solution for unauthorized access due to traditional password or smartcard based authentications. Biometric uses fingerprint, eye patterns (IRIS recognition), hand geometric, facial expression, voice recognition, and signature analysis etc. With the use of unique characteristics of person; various biometrics authentication devices have been developed and in use. Various software/hardware companies are developing such authentication for better security of sensitive, confidential informationís here the paper proposes the brief review on different biometric person identification methods.

Keywords: Authentication, Biometrics, password, smartcards, IRIS.