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You’re in an unfamiliar city on business. En route to your new client’s office, you make a wrong turn. And another. Now you’re stuck in traffic—and you’re going to be horribly late for your meeting.

If you’d had a portable Global Positioning System (GPS) with you, this massive headache may have been avoidable. A typical portable GPS features a color touch screen, on which your current location is mapped and updated as you travel. The device provides spoken, turn-by-turn directions to one or multiple destinations, which are displayed on the on-screen map.

Like many handheld devices, portable GPS systems have dropped in cost while adding features. You can buy some models now for as little as $200—virtually unheard of just a year or two ago.

Click here for the full story at SmallBusiness Computing.