I've been using a few location based apps such as NDrive, Color, and Sherpa. They each provide services based upon your GPS coordinates. NDrive lets you navigate and check in on Foursquare, Sherpa offers cupons etc. My questions is: it possible to manufacture a GPS signal? Can i have my chip speak with these apps telling them I am somewhere im not? To use foursquare or get cupons in a different location then I am. Any insight would be appreciated. Cheers.