Fingerprint Technology
FAR and FRR: A Buyer’s Guide to Fingerprint Lock Accuracy
False acceptance and false rejection describe different errors and must be interpreted with test conditions.
DIRECT ANSWER
FAR concerns an unauthorized match; FRR concerns rejection of an enrolled user. A practical lock balances both within its intended environment.
Numbers need context
Rates depend on thresholds, sensor quality, samples and test procedures. A value quoted without conditions cannot predict every user's experience.
Field testing should include varied fingers, temperatures and realistic handling.
Evaluate the system
Measure enrollment success, repeat unlocks, response time and fallback access. Also verify how reset and administrator functions prevent unauthorized changes.
Explore related BioLock locks
Key takeaways
- FAR and FRR measure different errors
- Test conditions change results
- Evaluate complete user workflow
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