The PTXTrak Real-Time GPS Tracking Device (left, $470) transmits the location of a car or person every 10 seconds (if driving) or every 20 feet (if walking), while you watch on a Web-based map. The Mini GPS Logger (right, $288) records and stores--on the device itself--the route, stop time, speed, direction, and altitude of a moving object. Subsequently you can retrieve the data and download it to a computer via USB.
Images: Eyetek, SpyGear4U
Republished with permission from PC World (view original version)