Centralizing authentication and authorization reduces cost, improves consistency, and permits rapid provisioning and changes. List the technologies on the way toward greater centralization, beginning...

Centralizing authentication and authorization reduces cost, improves consistency, and permits rapid provisioning and changes. List the technologies on the way toward greater centralization, beginning with stand-alone authenticators through corporate metadirectory servers. 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?