What do FRRs mean when fingerprint scanning is used to secure a PC against walk-up attacks? What might produce high FRRs? Can you think of a way that this problem could be reduced in fingerprint...

What do FRRs mean when fingerprint scanning is used to secure a PC against walk-up attacks? What might produce high FRRs? Can you think of a way that this problem could be reduced in fingerprint scanning?

Your company installs a face recognition system for door access. (a) Its FRR is much worse than the vendor’s claims. What might be causing this? (b) The system’s FRR increases over time. What might be causing this?