Have you heard the terms False Accepts and False Rejects? Or wondered what the abbreviations FAR or FRR meant?
False accept rate
The false accept rate (FAR) is the probability that a bad guy, who has access to your device, will impost and break into the system as you. This is also known as a false positive.
False reject rate
The false reject rate (FRR) is the probability that a good guy, you, will be denied access. This is also known as a false negative.