An accuracy measure for a biometric system is:

A.
system response time.

B.
registration time.

C.
input file size.

D.
false-acceptance rate.

Explanation:
For a biometric solution three main accuracy measures are used: false-rejection rate (FRR), cross-error rate
(CER) and false-acceptance rate (FAR). FRR is a measure of how often valid individuals are rejected. FAR is a
measure of how often invalid individuals are accepted. CER is a measure of when the false-rejection rate
equals the false-acceptance rate. Choices A and B are performance measures.