When going for a long hike in the woods or a cross-country bicycle trip, a map simply doesn't cut it. Most people would prefer something much lighter and less bulky than a fold-up map, something that would point them in the right direction with updated details of the latest trail and road developments. With a mobile GPS (global positioning system) device, users can throw away their old paper maps and use their new electronic tool to navigate with more ease than ever before.

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p>A Worldwide Network

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p>The GPS technology spans the entire globe with more than twenty functioning satellites at any given time (there are actually a number more than that, but a few are down for maintenance at any given time while others yet are being replaced). What this means is that users of any mobile GPS device are guaranteed service at any location on earth, regardless of terrain (provided they aren't underground) or atmospheric conditions.

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p>Mobile GPS is really the heart of the global positioning system. Although satellites are required to transmit and receive microwaves and computers calculate the exact position and speed with trilateration, the small receivers are what make the whole system worth one billion dollars a year to upkeep and research newer functionality and gain better performance. By gaining impressive knowledge of any terrain or road, soldiers can navigate battlefields with ease. Without those receivers, the satellites and computers would be rendered useless, unable to calculate anything.

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p>Still, mobile GPS presents several opportunities for the future. As the technology progresses and the manufacturing processes mature, mobile GPS devices are likely to cost only a few dollars, possibly with free use of the network (funded by tax dollars), unlike today's subscription service. Still, consumers can get very good subscription deals for a few dollars a month. More functionality will cost more, but not every consumer requires a list of available restaurants in the area.

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p>If you do a good bit of traveling or are simply looking to replace you old, outdated maps, mobile GPS devices are the perfect solution. You can take these small electronics anywhere, and they will be a constant companion and a perfect navigator that makes no mistakes when directing you. Nothing else could possibly combine the information of an atlas and the helpfulness of a guide with the knowledge of a culinary expert and film critic. You can get all of these things and more, and a mobile GPS device will help direct you in life.