You have to be within 100 feet of the item.....or 100 feet from another tracker.....not many trackers out there and they would have to be close to your stolen or lost item to have Tracker find it? This needs more work....and I think I could find an item within 100 feet of my phone...if I just keep looking. If someone steals my purse, they will be far beyond 100 feet with it. Back to the drawing board.