Learn in the textbookBiometric Authentication and Authentication Accuracy Metrics
DefinitionFRR stands for False Rejection Rate, the English counterpart of the Japanese term 本人拒否率 (false rejection rate).
ExplanationIt is the rate at which the genuine user is wrongly rejected. Japanese materials may write either 本人拒否率 or FRR, so learn to link the two when reading.
Memory hookReject means to turn back, so picture the genuine user being turned back at the entrance.