NoahFace runs on an iPad mounted next to your door, constantly monitoring for people approaching.
When it sees a face, it compares it with known faces using facial recognition technology. If there is a match, it evaluates your configured access rules and, if appropriate, informs a small receiver mounted behind the door or in your ceiling cavity.
The receiver either directly releases the magnetic lock (in a stand-alone configuration), or informs your existing access control system (in an integrated configuration).
The configured access rules include support for day-of-week and time-of-day restrictions, and you can set different identification requirements at different times. For example, you can allow fast and convenient facial recognition access during business hours, while requiring a passcode or even an access card outside of these hours.
A photographic record all access attempts is stored in an event log so you can examine it later if needed.