I'm assuming that to duplicate Loopt, you'd have to restrict it to cell phones with a full GPS chipset as opposed to just partial GPS capabilities for e911. Si

I'm assuming that to duplicate Loopt, you'd have to restrict it to cell phones with a full GPS chipset as opposed to just partial GPS capabilities for e911. Since the iphone doesn't have full GPS capabilities, I don't see this as really being a threat to Loopt at all. If they could get it to work with the e911 locating feature, then it would be applicable to all current phones...