The MOST effective biometric control system is the one:
which has the highest equal-error rate (EER).
which has the lowest EER.
for which the false-rejection rate (FRR) is equal to the false-acceptance rate (FAR).
for which the FRR is equal to the failure-to-enroll rate (FER).
The equal-error rate (EER) of a biometric system denotes the percent at which the falseacceptance rate (FAR) is equal to the false-rejection rate (FRR). The biometric that has the lowest
EER is the most effective. The biometric that has the highestEER is the most ineffective. For any
biometric, there will be a measure at which the FRR will be equal to the FAR. This is the EER. FER
is an aggregate measure of FRR.