A wireless tracking device can utilize a location detector, such as a GPS receiver or a short-range receiver, to provide locational information for the wireless tracking device. The wireless tracking device can transmit the locational information over a cellular network. Geofences can help manage location of the wireless tracking device. An analysis can be conducted at the wireless tracking device, at a server, or at some other appropriate location to assess integrity of the locational information. A determination as to whether the wireless tracking device is in an area can be based on the locational information and the integrity of the locational information.