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GPS navigation systems are devices that provide navigation and accurate positioning information. The Department of Defense created these devices in the early 1970's. They were created mainly to assist soldiers and military vehicles, ships and planes in establishing positions throughout the world. Today, the navigation systems are used both commercially and scientifically. In the retail world, GPS is used in cars, boats and other vehicles. The devices are also helpful for hiking, fishing and canoeing. The devices provide the user with accurate information and directions. In the scientific community, GPS is essential in the earth sciences. The devices are used by meteorologists to forecast the weather and study the climate. They are also used by geologists to study earthquakes and potential seismic activity.

The popularity of GPS navigation systems has increased dramatically. Regular people have discovered the many ways they can be used. In addition. their various designs, functions and features have made them more attractive.

How should you go about choosing a GPS Navigation System? You are probably aware that there are in-car, in-dash GPS devices as well as portable GPS devices. Which of the two should you buy? The key difference is that the latter type of systems cost less. An example of a portable device is the Garmin Nuvi GPS system which costs about two hundred dollars but has almost as comprehensive features as most in-car GPS devices do. The Garmin Nuvi GPS system is slightly more expensive but it has additional cool features like hands free cell phone Bluetooth calling capability and it uses NAVTEQ maps. In a nutshell, portable GPS devices have more advantages, including their lower costs and equally useful features.

When looking for GPS systems, it will all seem confusing at first due to the wide variety of pricing, features and brands. In fact there are probably hundreds of models available today. Also, the price can range anywhere from $150 to $900! When searching for a GPS system, you first have to know what options are available. Do you want just a standard system that can help you travel from one place to another, or do you want something more sophisticated with additional capabilities? If you're just needing something basic, then you should look at a price range that is below $500.

Search around the Web and the local merchants for some GPS brands, and ask their staff which are the most popular ones. After you have got a general idea, you could compare the price, quality and options amongst the popular brands. Note down and pick out the most appealing five or less. Go to the internet and check out what reviewers and other users feel about these brands and the ratings they give; you could even solicit advice from other users in online forums. You should also ask for recommendations from trusted users of GPS systems such as relatives, friends and coworkers.