GPS trackers are not just for vehicles anymore. Cell phonegiants like T- Mobile, AT&T, Verizon have enabled GPS locatorsfor cell phones. The first thing to do would be to compare coverageareas of these companies to get the most out of your service. Thetwo main types of GPS locators for cell phones are real-timetrackers and Geo Fencing.GeoFencing is a type of short range locator for cellular phones.It is only good for locating someone within a short distance, whenthey enter or exit a certain area. A user can set up an option toreceive an alert via email or text message when the person to belocated enters or leaves that area. This is good for parents withactive children and teens, or families of people with illnesses ordisorders.Another option of cell phone GPS locators is called real timetr