The goal is an audit trail of someone trying to use your Mac, including at the lock screen. Much like a doorbell camera or home security system. It complements proper account boundaries.

There's nothing hidden about the app. It sits visibly in the menu bar, and the camera light comes on whenever it takes a photo. Face recognition happens locally. Photos stay on your Mac unless you enable an alert destination. They never touch my server. No ads or tracking. I built it how I would want an app to function from a privacy standpoint.