Almost all types of detection permit a system's sensitivity to be increased or decreased during an inspection process. If the system's sensitivity is increased, such as in a biometric authentication…

The correct answer is B. Higher False Rejection Rate (FRR). In biometric systems, sensitivity controls the strictness of the matching threshold. Increasing sensitivity means the system demands a closer biometric match before granting access - making it more selective (harder to satisfy). This stricter threshold causes more legitimate…

Submitted by andres_qro· Apr 18, 2026Access Controls

Question

Almost all types of detection permit a system's sensitivity to be increased or decreased during an inspection process. If the system's sensitivity is increased, such as in a biometric authentication system, the system becomes increasingly selective and has the possibility of generating:

Options

ALower False Rejection Rate (FRR)
BHigher False Rejection Rate (FRR)
CHigher False Acceptance Rate (FAR)
DIt will not affect either FAR or FRR

How the community answered

(24 responses)

A
4% (1)
B
92% (22)
D
4% (1)

Explanation

In biometric systems, sensitivity controls the strictness of the matching threshold. Increasing sensitivity means the system demands a closer biometric match before granting access - making it more selective (harder to satisfy). This stricter threshold causes more legitimate users to be rejected, which is the definition of a False Rejection Rate (FRR) increase. Conversely, a higher sensitivity lowers the False Acceptance Rate (FAR), because it becomes harder for impostors to match. The two rates have an inverse relationship: tightening the threshold raises FRR and lowers FAR; loosening it does the opposite.

Topics

#Biometrics#Authentication#False Rejection Rate (FRR)#System Sensitivity

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