Biometrics refers to the automated methods of identifying or
authenticating the identity of a living person based on a physical or
behavioral characteristic. Unique physical traits, such as
fingerprints, iris scans, voiceprints, faces, signature, or the
geometry of the hand can be used.
DoD Biometrics Management Office.
This definition is distinguishable from the field of development of
statistical and mathematical methods applicable to data analysis
problems in the biological sciences.