Knowledge area
Biometrics
Biometric indexes
What kind of indexes are used to measure the effectiveness of a biometric identification and verification system ?
- FAR ( False Acceptance Rate ): refers to the likelihood that the system will incorrectly authorize and accept someone. Because a false acceptance can often lead to damages, FAR is generally a security relevant measure.
- FRR ( False Rejection Rate ): refers to the likelihood that a valid user is in incorrectly denied access through the system. FRR is generally considered to be a comfort criteria, because a false rejection is for the most part, simply an annoyance.
- FER ( Failure to Enroll Rate ): refers to the percentage of people who fail to be enrolled successfully because they do not have sufficient sample quality.
- THRESHOLD: as a type of reference, it is the scores that determine a template's consistency. This can be adjusted, depending on the security level.
- FTE ( Failure to Enroll ): the enrollment error rate indicates the numerical probability of those that may not register because of failure to create reproducible templates.
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