chapter  2
32 Pages

Biometric Modalities

Biometrics means “life measurement.” Biometrics refers to automated methods of recognizing individuals based on measurement of their physical or behavioral characteristics.

A biometric system is basically an automated pattern recognition system that either makes an identification or verifies an identity by establishing the probability that a specific physiological or behavioral characteristic is valid. It is based on the use of unique and measurable physiological or behavioral characteristics. Physiological characteristics include, but are not limited to, a person’s vein patterns, facial structures, ocular characteristics, hand geometry, or fingerprint. Behavioral characteristics are based on an individual’s unique actions captured over a period of time including such traits as signature dynamics, voice, gait, and keyboarding dynamics.