In biometric identification systems, the parts of the body conveniently available for identification are:

A.
neck and mouth

B.
hands, face, and eyes

C.
feet and hair

D.
voice and neck

Explanation:
Most identity authentication takes place when people are fully clothed (neck to feet and wrists), the parts of the
body conveniently available for this purpose are hands, face, and eyes.
Incorrect Answers:
A: The neck is not convenient as it can be covered.
C: The feet normally have shoes on, and therefore not convenient.
D: The neck is not convenient as it can be covered.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 187-192