A GPS (Global Positioning System) tells you at any time, at any place,
exactly where you are, where you are going and where you should be going.
Especially in deserts that can be a useful bit of information. The Garmin GPS V
I have mounted on the handlebars is water-proof, shock-proof and idiot-proof.
That means even I can use it, but despite all that modern technology I am still
able to get lost.
The trip-computer tells me daily mileage, average speeds, riding-times etc.
More important, it tells me how much more I can go on the fuel I have left.