International Journal of Computer Applications
Biometrics, which refers to authentication based on his or her physiological or behavioral characteristics, its capability to distinguish authorized person and an unauthorized. Since biometric characteristics are distinctive as it cannot be forgotten or it cannot be lost, for identification person has to be present physically. Biometric is more reliable and capable than traditional knowledge based and token-based techniques. Biometric has drawback i.e., if compromised then it is difficult to replace. Among all biometrics such as fingerprint, facial thermogram, hand geometry, face, hand thermogram, iris, retina, voice, signature etc., Iris-based identification is one of the most mature and proven technique.