The big word for today is S-E-C-U-R-I-T-Y. We are all trying to figure out how to be more secure. Imagine being able to open your office door just by looking at your access control reader, without a card or keypad, when you are carrying a load of stuff. That is the job of face recognition in the access control world: Convenience and super security.
How does face recognition work: The face is enrolled by looking into the camera and which creates a visual image or mathematical template that is saved in the database and cannot be reconstituted into a visual image. In use, a live face is compared with the saved facial image.
Face recognition when used for identification for access control increases the level of security because the live face has to be the exact face that was saved. This face cannot be copied, shared, or stolen as is so common with cards or keypad codes.
In summary, access control products that use face or fingerprint recognition for identification, provide the highest level of security at the door. This level of security is also convenient and is not possible with card or keypad code credentials.