The BEST overall quantitative measure of the performance of biometric control devices is:

A. false-rejection rate.

B. false-acceptance rate.

C. equal-error rate.

D. estimated-error rate.

Explanation:

A low equal-error rate (EER) is a combination of a low false-rejection rate and a low false- acceptance rate. EER, expressed as a percentage, is a measure of the number of times that the false-rejection and false-acceptance rates are equal. A low EER is the measure of the more effective biometrics control device. Low false-rejection rates or low false- acceptance rates alone do not measure the efficiency of the device. Estimated-error rate is nonexistent and therefore irrelevant.