When you’re shopping for a computer, chances are you’re looking for something fairly different from most others. You might want a computer just to e-mail and type with. You may want want to browse the web with it. Then again, you may also want to calculate physics, process video, or play PC games with it. [...]

Previously, tracking systems consisted of triangulation of energy waves, which depended on the strength of the transmitter (often weak in small devices) and was often a rough estimate at best. Technologies such as radar also had their uses, but they were generally used for aviation and military purposes. Now, consumers from around the world can [...]