You are currently viewing CISSP Notes: Biometric Factor Ratings

CISSP Notes: Biometric Factor Ratings

False Rejection Rate (FRR)

  • The number of times biometric authentication has falsely rejected a legitimate user
  • Also known as false negative
  • Also known as a Type I Error

False Acceptance Rate (FAR)

  • The number of times biometric authentication has falsely authenticated someone when in fact the authentication should have failed
  • Also known as false positive
  • Also known as a Type II Error

Crossover Error Rate (CER)

  • Is the point at which the FRR and FAR meet and is used to determine the quality of the biometric authentication
  • Also known as the Equal Error Rate (EER)
  • Biometric that output a lower CER are deemed to be more accurate than those that have an higher CER
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