If you have a tendency to misplace belongings, then an item-tracking device may be just the thing you need. The new TrackR bravo is one such device. It can be used with its mobile app as a means of locating items to which it is attached, and will even help to find a misplaced phone by ringing it.
The Retrievor RET-100 is a self-contained, solar-powered GPS tracker no wider than a US quarter that uses a combination of GSM, GPRS, and GPS to provide redundancy and locate objects with an accuracy of to within 1.5 m (5 ft).
Button TrackR helps users track their cherished objects and innovates with crowd sourced tracking.