1. A biometric notification system (“BNS”) with facial recognition and related services, the system comprising: plural digital video cameras (C 1. .. C n ) that monitor respective zones (Z 1. .. Z n ) at a first site; a processing system including a processing facility and a database facility; a network interconnecting the video cameras and the data processing facility; a video frame acquired from a video camera C x in zone Z x includes a first content and a first facial feature set derived from the first content; a database of the database facility includes plural cases, each case identifies a person by linking a name with a second facial feature set and a case group; and, a matched case discovered when the processing facility finds the first feature set matches a second feature set; wherein message trigger criteria include a requirement that a matched case is discovered.