I'm a little confused in reading these other reviews. Am I really the only one that's having problems with my unit? I've gotten on my computer to track my own device and it shows that I haven't moved in days! If I were a family member tracking this device I'd be worried that I had died. Called customer service and they seemed to just give me the run-around about how it tracks. Not pleased at all with the service, I don't think it works properly.