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Which of the following would BEST indicate a more secure biometric authentication system?
High FAR
Low FRR
High FRR
Low FAR
Low number of Type II errors (or low False Acceptance Rate (FAR)) would indicate a more secure biometric system. High number of Type 1 error( FRR) indicate a non user friendly system. This is because the system is producing a high rate of false positives, i.e. blocking many valid users. FRR refer to the ability of the sytem to allow vaild users . FAR refer to the ability of the system to block invalid users.
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