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False acceptance rate

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Definitions Edit

A false acceptance rate is

[t]he probability that a biometric system will incorrectly identify an individual or will fail to reject an impostor. The rate given normally assumes passive impostor attempts.[1]
[a] statistic used to measure biometric performance when operating in the verification task. The percentage of times a system produces a false accept, which occurs when an individual is incorrectly matched to another individual's existing biometric. Example: Frank claims to be John and the system verifies the claim.[2]

References Edit

  1. NIST, FIPS 201.
  2. Biometrics Identity Management Agency, Biometrics Glossary, at 26 (Ver. 5) (Oct. 2010) (full-text).

See also Edit

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