One thing to keep in mind is that there are almost invariablyproblems of some sort with all electronic gadgets. And it’s doubly true when it comes to equipment that is run by software. If you’re not sure about this, check out a computer that is run by Windows? We often find ourselves stymied by the limitations of the software we are using.

And the same is true when it comes to software driven GPS systems and GPS devices. This fact alone makes them a little unreliable. For those times when reliability isn’t at its best keep in mind that for the most part the system works well. And, of course, just like a cell phone, the time when you need it most will be the time when it isn’t working properly. The good news is that the units themselves are often quite resilient and even able to withstand the manhandling a typical rough and tumble two year old can dish out.

The reliability of GPS systems will always reduce when it doesn’t have full all-round views of the sky. For that reason there may be times when you aren’t able to get a clear signal. The obvious times that this happens is when going through tunnels under mountains or rivers. The GPS device has to pick up signals from at least three satellites, in geostationary orbit above the earth in order to be able to calculate its position. And usually a fourth satellite is needed for verification purposes. It means that although you might think you can see the sky clearly, your GPS might not be able to detect all four satellites.

Remember too that the use of a GPS system is not supposed to replace the use of maps aor common sense when you’re on the road. You can only store so much information on a GPS device and roads are constantly being built, changes, constructed, improved, and moved. For that reason alone it is nearly impossible to guarantee that any device will contain 100% accurate information at all times. You should buy a GPS or Auto Navigation System that has the facility for regular upgrades to its internal maps. Updating regularly and immediately prior to any large trips will go a long way towards saving some serious hair pulling while you travel.

GPS and auto navigation systems are still miles better than trying to read old maps, which might be out of date, for most of us. When you take the plunge and decide to buy one, don’t expect it to perform miracles. The systems are good but they’re not infallible. This technology is wonderful and affords many benefits to those who are willing and able to make use of it. Common sense is your biggest ally when driving and although a GPS can be a fantastic help it should only be used, as the military use it, in a support role.

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