Talking about biometric authentication, physical characteristics typically include (choose all that apply):

A. fingerprints

B. eye retinas

C. irises

D. facial patterns

E. hand measurements

F. None of the choices.

Explanation:

Biometric authentication refers to technologies that measure and analyze human physical and behavioral characteristics for authentication purposes. Physical characteristics include fingerprints, eye retinas and irises, facial patterns and hand measurements, while behavioral characteristics include signature, gait and typing patterns. Voice is often considered as a mix of both physical and behavioral characteristics.