Live GPS tracking, from Liveviewgps Inc. Access from any Web enabled computer allows officers to watch vehicle position from any computer, Iphone or Droid mobile device with Internet access. Positions are updated every 20 feet or every 10 seconds when over 10 miles per hour. The PT-10 professioanl is motion activated and will last for 60 plus hours of actual drive time (unit auto shuts off when not moving). Unit also stores and records all data to server for 90 day historical playback. See exactly where the PT-10 was stopped at, for how long, etc. Receive alerts when the PT-10 exceeds predesignated set speed thresholds or geographic areas.