[MDM geofencing](https://blog.cubilock.com/what-is-geofencing-why-its-an-essential-technology)

[manage multiple android devices](https://blog.cubilock.com/best-mdm-to-manage-multiple-android-devices)

[android single app mode](https://blog.cubilock.com/android-single-app-mode-lock-android-to-single-application)