Biometrics refers to methods for uniquely recognizing humans based upon one or more intrinsic physical or behavioral traits. In information technology, in particular, biometrics's used as a form of identity access management and access control. It's also used to identify individuals in groups that're under surveillance. Biometric characteristics can be divided in two main classes: Physiological are related to the shape of the body. Examples include, but aren't limited to fingerprint, face reco… (More on Biometrics)