Hello Alessandro,
Setting the display brightness is not currently supported by our Android SDK, so any solution to change the setting programmatically will need to prompt the user to grant the necessary permissions.
We do, however, support changing the setting within our configuration tools. This setting is available starting with v1.3.0 of our Scan2Deploy application (we always recommend using the latest if possible) and OEMConfig v1.6.0 (if using an EMM).
Bronson Mock
Software Engineer | Datalogic