What is Umwelt?

Umwelt locks your Mac when you are away from it and unlocks when you come back, automatically. By measuring the strength of the Bluetooth signal from your phone or smartwatch, it "senses" when you are close or away.

• You can adjust the locking/unlocking distance very easily from the main menu.
• It doesn't mess up your existing screensaver and sleep mode configuration. You can also login typing a password.

See more details in the tutorial: How to install and use Umwelt.