I think it's dumb, but technically meets the requirements of 1-4-6-c as long as it's off. That said, if they turn it on during a game, they're coming out. 'Coach, no, he can't just turn it off, by rule (1-4-8-b) he must go out for one down.' If you've got the stones to risk getting scratched, this will very quickly not be a thing. Or, if you don't, it will continue to get worse.