As a room manager I need the app to keep the tablet in an 'always on display' mode locked to the app, so it can't be exited.

There needs to be some mechanism to exit the app to manage the room or use the tablet in other ways, but it shouldn't be accessible to a non room manager.

No files, tests, or entry points are named. Start by locating the tablet app's lifecycle and access-control code, then determine how room managers can authenticate and exit the locked display. Done means the app stays active for non-managers while an authorized room manager can exit it to manage or use the tablet.

Written by the indexing model from the issue text.