[rrebelo]

Sorry for the shameless plug, but for those without an Apple Watch I've made a program [0] that implements the Unlock Mac with Bluetooth for any other device, including Android phones, Android Wear or Tizen watches or even some ear plugs.

[0] https://www.gadgetish.com/osx.html

Edit:

However, the Windows version works only with Android phones: https://www.gadgetish.com

[artificialLimbs]

Enabled Umwelt in Accessibility (Big Sur).

Clicked allow updates.

Crashes every time I open. Displays check for updates screen, then immediately crashes.

[rrebelo]

Oh, thank you. I hadn't test it under Big Sur.

It seems there is an incompatibility with Big Sur in the Sparkle Framework (I use it for updates).

Will look into it.