"Where you at, dawg?" Now, the answer doesn’t require a vocal response. In a new debut, Sprint is rolling out a service called loopt, a GPS-based location tracker, that allows friends and family to share their location and transmit proximity-based messages a la Helio’s Buddy Beacon. Basically, the people in your network will show up on your map, and you even have the option to get alerts when they’re in they’re in ya ’hood. The flip-side, of course, is that everyone else in your network can see if you’re up to no good where you are, as well. Perhaps the new question should be "Big Brother, where art thou?"
