False Acceptance Rate

nounverified·updated May 9, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

The measure of the likelihood that the biometric security system will incorrectly accept an access attempt by an unauthorized user. A system’s false acceptance rate typically is stated as the ratio of the number of false acceptances divided by the number of identification attempts.

polysemousMWENISTIR 7298: Glossary of Key Information Security Terms, Revision 2

Senses

1 more sense beyond the canonical

NISTIR 7298: Glossary of Key Information Security Terms, Revision 2

The 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.

Classifications

per-axis with provenance

Entity Type

Metric95%llm-generatedllm:claude-haiku-4-5

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Sensitivity

—85%llm-generatedllm:claude-haiku-4-5

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Information Class

—90%llm-generatedllm:claude-haiku-4-5

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Variants

4 surface forms

acronym: FAR
plural: False Acceptance Rates
possessive: False Acceptance Rate's
pluralpossessive: False Acceptance Rates'

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