There are several different types. GPS tracking device could be in the form of data loggers, data pushers and also data pullers. Data pushers could be used for personal uses. For instance, if you need to keep a check on your reckless teenager and you are worried about her safety. In order to keep an eye on her whereabouts, you can install a tracker service on her smartphone. GPS tracking software would enable you to do that. The software actually helps the GPS tracking device to work. Of course, for any hardware, you need some software to operate it, and this is exactly how it goes here. Furthermore, the software helps the device to communicate with the server by sending signals, which tell the actual location of your vehicle and help you locate it.