GPS which is short for Global Positioning System has become quite the overused term today. Our GPS vehicle tracking devices fall into 2 categories, Real Time and Loggers. The real time units allows you to view the location of a vehicle exactly where it is at that moment (give or take a few seconds) depending on which part number you purchase. The loggers log or store information. Our 3009P logger connects via a USB port to your computer. When you download or simply view the coordinates stored through Google Earth you will see time date stamped footage as to where that vehicle was with pictures of roads, parking lots, etc. The Real Time GPS devices operate with a combination of cellular service and the Internet.