Sounds like a great idea! As long as...
the correct satellite is in the correct position,
the batteries are in good shape (we all KNOW that a law abiding firearm owner will keep fresh batteries in),
the LCD camera is not blocked with a piece of tape,
the law abiding firearm owner does not put animal blood over the trigger,
the testing materials are all fresh and restocked into the mechanism by the law abiding firearm owner,
and the GPS antenna cable has not been cut...
THIS WILL WORK PERFECTLY!
Have you seen the movie Gattaca?
The more ludricous the idea, the more likely it is to become law. I think yours has a very good chance.