GoKawiilNew Mac app Someone Was Here photographs unauthorized users, alerts your iPhone
Someone Was Here is a free macOS utility that uses the Mac's camera to photograph anyone who uses the computer while the owner is away, triggering on idle use, lock-screen attempts, or unlocking. It sends the photo, along with the time, method of access, and duration of use, to the owner's iPhone via iCloud within seconds, and also supports Pushover, ntfy, Telegram, or webhook notifications. The app learns the owner's face during a two-minute setup and processes recognition locally on the Mac so the owner isn't flagged.