GPS - What Do You Need to Know About Them

 let you download the map free).
Unless you’ve been living under a rock, you 
certainly have heard of the Global PositioningWhat to look for?
System or GPS. There is a GPS for almost 
everyone: for hikers, drivers, bikers etc. You also- Ease of Use. If you are not too comfortable
find GPS modules on some advanced mobilewith gadgets, you might prefer going for a simple
telephones like the Nokia 6110 Navigator.model. One that simply guides you from A to B
 without all the extras.
What is it?- Traffic Info. Some GPS offer real time info on
 traffic jams or road works. The GPS then
In very simple terms, the Global Positioningrecalculates your route – and offers an
System (GPS) uses radio signals from 4 satellitesalternative one. These services are often charged
to locate the exact position of anything on Earth.so you’d better check before buying!
 - Speed Cameras. Most GPS’s come with a
What does it cost?pre-installed list of speed cameras. And again here,
 you will need some form of subscription to
Apart from the cost of buying one, using a GPSupdate that list with new cameras.
is free of charge. In fact some of the most basic- Maps. Some GPS only cover a limited geographic
GPS do just what they are about: guiding thearea. Others have more extensive maps like the
driver from A to B via a graphic interface.Tomtom Go 730. This type will be particularly
 useful for your holidays abroad. New maps can
The most recent models come with a range ofalso be purchased as CD roms or on pre-loaded
functions (MP3 player, slideshow, video player, bluememory cards.
tooth kit, and even digital tv!). 
 You can also download off the website of most
Some GPS have pre-installed POI (points ofGPS makers. After download, you then transfer
interest) such as garages, restaurants, parking etc.the maps onto the GPS using either a memory
GPS makers have also added new value-addedcard, a usb cable or a bluetooth kit (if your GPS
services such as live traffic update or a weatherhas bluetooth).
services like Tomtom Weather on the GO 530 
730/930).- Screen Size. This usually varies between 3.6 and
 4.3 inches. AS rule, especially for car GPS,
You will need a subscription to most of thoseinformation on the screen should not be too hard
services however. Typically an annual subscriptionto read. But this should not be a problem
costs around $50, with unlimited updates.considering that most new GPS's come with voice
 navigation.
Other options are free for a limited period only 
(for instance when a new map becomes availableNeed to know more about GPS devices, check
within 30 days of buying a new GPS, Tomtom willout the GPS reviewer.