Mobile GPS Terminal

The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. ... in the 1980s, the U.S. government decided to allow the GPS program to be used by civilians. Weather conditions do not affect the ability for GPS to work. The systems works 24/7 anywhere in the world. There are no subscription fees or setup charges to use GPS. ... Consumer GPS navigation devices include: (1) Dedicated GPS navigation devices. (2) GPS modules that need to be connected to a computer to be used. (3) GPS loggers that record trip information for download. Such GPS tracking is useful for trailblazing, mapping by hikers and cyclists, and the production of geocoded photographs. (4) Converged devices, including GPS Phones and GPS cameras, in which GPS is a feature rather than the main purpose of the device. [GPS navigation device. Wikipedia]