A director does this once, on the tablet itself. It ties this device to a room, and only devices set up this way can reach the sign-in or anything with a child on it. A personal phone never gets one.
Tap your name, then enter your PIN.
It is kept on this tablet with the time now and sent when the connection is back. Your manager is asked to confirm it, because the PIN could not be checked.
The same at every nursery today. Spot it, and write it up with Write an observation.