For Android and Window Mobile devices, you can use Mobicontrol Stage application which provides a way to quickly and easily enroll your devices in MobiControl and provision them with management policies. Administrators create a custom barcode that contains provisioning instructions. Once the device users scan the barcode with their devices, the device will automatically perform any provisioning tasks assigned by the administrator.

For for iOS devices you can use Apple DEP: https://www.soti.net/mc/help/v14.0/en/console/devices/managing/enrolling/platforms/dep/appledep.html

Regards

Soti Support1