wireless devices for navigation and communication, namely, portable tracking units that combine GPS and cellular technologies for determining location information and communicating the location information; installed vehicle locator devices that combine GPS and cellular communication technologies for auto theft recovery; wireless emergency personal locator beacon devices which transmit wireless radio-frequency beacon signals for reception by satellites associated with a search-and-rescue satellite system; electronic perimeter apparatus for helping keep track of children, namely, wireless proximity alarms; devices for wireless radio transmission; mobile computing and operating platforms consisting of data transceivers, wireless networks and gateways for collection and management of data; telematics apparatus, namely, wireless Internet devices which provide telematic services and have a cellular telephone function; wireless telephones; wireless telephony apparatus; wireless transmitters, namely, security alarm system transmitters and fire alarm system transmitters used in site security, home security, base security, campus security, plant security and building security applications for transmitting alert and alarm messages to a central monitoring service