. >> reporter: da george gaston has had enough.d the attorney general will hold a smart phone summit. they're expecting phone companies and microsoft to develop a way to stop the thefts. of the da says he knows the technology is there. >> what samsung has done now is once a phone is hooked up to a wireless system, they can immediately render the phone inoperable. >> reporter: the phones would be useless and presumably hurt the market for selling the stolen goods. lookout, a company that makes security programs for mobile devices, says a kill switch could also help the bad guys. >> you have to move cautiously toward any solution. something like a kill switch could open up an entire new box of security concerns. so we need to be very careful. >> reporter: makers generally do not embrace the idea. and users are mixed. >> i favor that. i heard that the carriers are the ones that are more against it than the general public. they sell more phone, then they got stolen. >> i don't think it's going to solve the problem. >> reporter: there's