With this simple app you can lock your phone in any imaginable way: Pressing the app button, using our smartwatch app, or even with Voice activation by saying Ok Google, open Lock!
Unlicking your phone again will require you to use your pattern or code. Protect your privacy from the TSA or police, because they can make you unlock your phone with your fingerprint - but they are not allowed to force you to unlock it with your passcode!
This app is AdFree and Open-Source: https://github.com/Somethingweirdhere/Lock-with-Smartwatch
This app uses the Device Administrator permission. This permission is needed to lock the screen.