Being lost in the middle of nowhere or in the middle of New York City is not much fun. People have always been looking for better ways to keep track of where they are, where they have been, and where they are going. Even little Hansel and Gretal left breadcrumbs as they wandered to help them get back home. Granted, the breadcrumbs were eaten by pesky animals almost as soon as they were dropped, but... [read more]