OpenMacApps

Sentry

Watches lid, network and power state while you step away, then records camera video and sounds an alarm on change.

MIT · Downloads from github.com

License
MIT
Open source
Category
Privacy & security
Source
GitHub
Lakr233
Verified
2026

About Sentry

Sentry is meant for a Mac left alone for a few minutes, such as a laptop on a café table. In Sentry mode it watches the lid, network connectivity and power connection. When something changes, it records video clips with the camera and can sound an alarm or send a push notification through Bark. The README asks users to watch only their own devices and to follow local recording laws.

It requires macOS 13 or later and camera permission. The GitHub release zip is Developer ID signed and notarized. The README points to a paid Mac App Store build and says a source build is free. The Mac must stay awake when its lid closes, so the README suggests SleepHoldService or sudo pmset -a disablesleep 1. The latest release is 1.3.13, from June 2025.

Information

Source code
Lakr233/Sentry
License
MIT
Website
github.com
Download
github.com
Category
Privacy & security
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