Someone Was Here is a Mac app that records a photo when someone uses the computer after it has been idle, interacts with the lock screen, or unlocks it. Each visit is saved with its time, how the person accessed the Mac, and how long they stayed. The app can send the image to an iPhone within seconds, so the owner can see who used the computer while they were away. A free iPhone app displays current and previous visits; instant phone alerts cost $4.99 as a one-time purchase. Notifications can also be sent through Pushover, ntfy, Telegram, or a webhook.
The app distinguishes its owner from other visitors using face recognition set up with a brief guided session. This check runs on the Mac, and recognized visits are labeled as the owner rather than triggering an alert. The product emphasizes visible, consent-conscious monitoring: it appears in the menu bar, activates the camera light whenever it takes a photo, and is intended for protecting the owner’s own Mac. Photos remain on the Mac, while delivery to the iPhone uses the owner’s iCloud; the service requires no accounts and includes no ads or tracking. People who share the space are advised to be told that the app is present.
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