This app works as "Kiosk" browser. It loads a specific url inside of WebView and locks the screen, so that the user is not able to exit.
The app is related to my blogpost that shows how to use Android's device owner mode to turn your Android device into a dedicated (COSU) kiosk www.sisik.eu/blog/android/dev-admin/kiosk-browser
Before you can use the kiosk browser, you need to configure your target device via ADB
adb shell dpm set-device-owner eu.sisik.kioskbrowser/.DevAdminReceiver
To load your own url, change the MY_URL variable inside of MainActivity.