GPS shoes for tracking children or the elderly have been around for awhile but now you can get GPS shoes that give directions. The left heel is hollow (I am guessing the design may vary) to contain the GPS unit,the right shoe features a line of LED lights. The lights start out red and change to green as you near your destination,a wheel of lights on the left shoe indicate the direction to walk. The shoes connect to a computer through a USB connection where you load your destination into the shoe. Some shoes are activated by clicking the heels together,unfortunately this feature is too late to help Dorothy. I will take a pass once again as I enjoy the option of getting lost and the surprises encountered on the less traveled path.
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