The GPS device in your phone is already active. Verizon has just chosen to limit the applications that are able to communicate with the GPS radio. Fair or not, that's what they do and your options are very limited. You can get an external bluetooth GPS device and use any application you wish. Perhaps you shouldn't have to, but you do.
This is also a very old and very talked about topic, and therefore certainly nothing new.
Treat your password like your toothbrush. Don't let anybody else use it, and get a new one every six months.