ITPEC IP October 2022 Question 44
ITPEC IP October 2022 — Question 44 of 100
Lowering the false rejection rate improves convenience, while lowering the false acceptance rate improves security. Fewer false rejections let legitimate users authenticate more reliably. Fewer false acceptances reduce the chance that an impostor is admitted.
Answer (c)
Why not others:
- lowering false acceptance primarily strengthens security, not convenience
- unsupported rate measures inability to capture or recognize a sample and is not the stated security trade-off
- false rejection and false acceptance are the two threshold-dependent errors
Key rule: A looser biometric threshold tends to reduce FRR but increase FAR; a stricter threshold tends to do the reverse.
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