If you've been confounded by all the technical jargon and hype surrounding GPS, confusing what's turning out to be avery useful tool, allow me to shed a little light on your roadmap to deciding whether or not this technology is for you!

Global Positioning System (GPS) is a navigational aid originally developed for the military. The system simply receives signals. It is the applied technology that gives the GPS its versatility.

An introduction to GPS technology, the various types of GPS systems on the market, and tips on choosing a unit that is right for you.

I took a look at some of the online offers for free GPS software and found, like many "free" offers there were often limits and provisos involved. Often the freeware is a scaled--down version of purchasable products.

Like many other technologies, feature rich GPS units are now affordable for the average person. So how do you know which one to purchase?

I am an expert navigator with a map & compass but neither is as effective or as easy as the eTrex.

Motivated by the events of 9/11 2001 and problems with 911 calls from cellular phones, the FCC requires that by the end of 2005 all cell phone carriers must be able to trace the location of cell phone calls to within a range of no more than 100 meters.

Once they were only for the rich and were only fitted in the very high end cars but today SatNav systems are available to all.