False Acceptance Rate
False Acceptance Rate (FAR) is a biometric security system metric that measures the likelihood of an unauthorized person being granted access to a system or facility. FAR is calculated by dividing the number of false acceptances by the total number of identification attempts. False acceptance occurs when the system incorrectly identifies an unauthorized person as an authorized user and grants them access. FAR is an important metric in biometric security systems as it directly impacts the system's overall security. A high FAR means that the system is more likely to grant access to unauthorized users, while a low FAR means that the system is more secure and less likely to grant access to unauthorized users.
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