I need these to find my car after work! From Eric Limer … You'd Never Get Lost With a Pair of These GPS Shoes:
Commissioned by the Global Footprint project in Northamptonshire, these functional prototypes have a GPS device implanted in the heel with an antenna pointing out the back, and two sets of directional LEDs in the toes. The circular LED display points in the appropriate direction, and the straight one indicates distance. And how do you turn them on? You click your heels, duh.
Before use, all you have to do is upload your destination—stereotypical "home" or otherwise— to the shoes using a map program and you're good to go.