GPS Tracker Detector

Are worried about a concealed GPS tracker and would like a GPS Tracker Detector? When detecting GPS trackers, remember they  all use mobile phone technology to relay the position and normally do that every 30 seconds to a minute or so. To detect GPS trackers you should leave a detector in your car and go for a long drive. If you start seeing signals every 30 seconds or 60 seconds or any other regular time interval you may have a tracker on board.