I ended up buying three of these. The first was untracked after a week. The second got lost (didn't even send a low battery signal - tech support said the battery could die very quickly before it could send a signal), giving us a clue as to where it was. The third shows it in my house with 60% battery but can't find it. I called tech support, they said if it doesn't move it can be tracked. So maybe I'm unlucky. I paid for a year because the monthly fee is reasonable. It's still less and better than the monthly fee among all others. Perhaps they can come up with a new device to make a sound to locate the device and/or person.
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