Biometrics (or biometric authentication) consists of methods for uniquely recognizing humans based upon one or more intrinsic physical or behavioral traits. In computer science, in particular, biometrics is used as a form of identity access management and access control. It is also used to identify individuals in groups that are under surveillance.
Biometric identifiers are the distinctive, measurable characteristics used to identify individuals. The two categories of biometric identifiers include physiological and behavioral characteristics.
Physiological characteristics are related to the shape of the body, and include but are not limited to: fingerprint, face recognition, DNA, palm print, hand geometry, iris recognition (which has largely replaced retina), and odor/scent.
Behavioral characteristics are related to the behavior of a person, including but not limited to: typing rhythm, gait, and voice.
We’ll stop here for now. Make sure you memorize the definitions for both types of characteristics and also the definition of biometric identifier.
Until next time, stay safe!