I know that many survivalists prefer to head out into the wilderness with nothing more high tech than a digital watch. However, even the most talented and intelligent survivalists sometimes run astray of their path, and a GPS system can avoid catastrophe in such situations.

In other words, GPS might save your life if you throw one into your pack along with your map, compass, knife, food stuffs and other gear. In fact, some survivalists won't leave home without this handy device.

The great thing about GPS for survivalists is that you can use it only when you absolutely have to. If you never encounter a situation where your survival depends on knowing where the heck you are, leave the gadget in your pack and pretend you don't even have it.

When you're buying a GPS device, however, there are a few things survivalists should keep in mind. Simply picking the first one off the shelf is a mistake, particularly if you will only be using your GPS device for outdoor wilderness training.

First, your GPS system should be small and easy to carry. When you're trekking through the wilderness, the last thing you want is more weight, and a smaller device will be more accessible in an emergency.

You'll also want a GPS system that is waterproof. Not only might you find yourself accidentally falling into a lake or stream, but rain and other forms of precipitation will ruin a non-water-proof gadget.

Depending on where you go for survivalist excursions, hiking, trekking and other activities, you might want to choose a GPS device that allows you to store points or locations along your route. This will help you stay on track throughout your journey, especially if it is taking you through unknown territory.

And finally, don't replace your compass and map with a GPS device. Yes, GPS can make survival easier, but there are some places where it won't be helpful. Ravines, trenches, ridges and hollows are a few locations where GPS doesn't always work, so make sure you have backup equipment.