Some products already have this feature but the wireless carriers industry group questions its effectiveness.
“This isn’t the solution, because when you look at other countries that have tried this, it doesn’t work,” said Amy Storey, spokeswoman for CTIA, the national wireless trade group.”
It appears that the best way to hold on to these devices is to be vigilant. In other words, it’s probably not a good idea to pass out in a Metro station with an iPhone in your hand.