Computer hardware and software system for tracking people, objects and pets using GPS data on a device on the tracked people, objects and pets; Global positioning system (GPS); Global positioning system (GPS) consisting of computers, computer software, transmitters, receivers, and network interface devices; GPS data logger for recording trips and classifying them into different accounts; Mobile computing and operating platforms consisting of data transceivers, wireless networks and gateways for collection and management of data; Personal security alarms; Protective carrying cases specially adapted for personal digital assistants (PDA); Satellite navigational system, namely, a global positioning system (GPS); Vehicle locator and recovery device programmed to use global positioning systems (GPS) and cellular telecommunications; Wireless communication device featuring voice, data and image transmission including voice, text and picture messaging, a video and still image camera, also functional to purchase music, games, video and software applications over the air for downloading to the device; Wireless controller to monitor and control the functioning of other electronic devices