Which of the following biometric devices offers the LOWEST CER? 

Answer options:

A. Keystroke dynamics
B. Voice verification
C. Iris scan
D. Fingerprint

C

From most effective (lowest CER) to least effective (highest CER) are: Iris scan, fingerprint, voice verification, keystroke dynamics. Reference : Shon Harris Aio v3 , Chapter-4 : Access Control , Page : 131 Also see:http://www.sans.org/reading_room/whitepapers/authentication/biometric-selection-body-parts-online_139