I was wondering whether we can create a hidden GPS question so we can validate with the actual GPS question where interviewer record.
Yes, you can do it.
But your hidden GPS question should be preload.
@yubraj has specifically mentioned "question that records GPS automatically?"
The answer is a definitive NO.
GPS location is not recorded automatically.
Also, not all tablets may record specifically the GPS location. Some use other methods of locating.
@sergiy I have a doubt:
In GPS questions is necessary be connected to internet to register the location?