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Get Umwelt old version APK for Android
Umwelt allows you to lock/unlock Windows 10 with your Android Wear watch.
Umwelt is like Smart Lock, but for Windows 10 PCs: it locks your computer when your Android Wear watch is away from it and signs in when you are close. It does that by measuring the intensity of the Bluetooth signal.
Warning: to use this app, you'll need to download the Umwelt PC application into your computer. You can download it from the Gadgetish website: https://www.gadgetish.com/tutorials/InstallingUmweltWindows.html