Hi all, author here.<p>On macOS (Mojave, Catalina, ...) you can lock/unlock the computer with an Apple Watch by proximity. But I don't want an Apple Watch...<p>So I made a program to replicate this feature. It connects to any (classic) Bluetooth device and keeps monitoring the intensity of their Bluetooth signal (rssi). When it is below a threshold (defined by the user) it locks the computer. When it is above it unlocks.<p>Unlike Apple's version, my program doesn't require WiFi and works even with older Macs that don't support Auto Unlock. However it doesn't handle admin login or does 2-factor authentication, yet. That might come later.<p>I posted here before a Windows version[0], but it only works with Android phones.<p>[0] <a href="https://news.ycombinator.com/item?id=16476882" rel="nofollow">https://news.ycombinator.com/item?id=16476882</a>