The Nakajima Laboratory at the University of Electro-Communications in Japan has developed a prototype pair of GPS-enabled glasses that use LED lights built into the frame to keep you moving in the right direction.
The glasses house a microcomputer used to input your final destination, which works in tandem with a sensor to facilitate directional functions. A specific light pattern illuminates the LEDs if you're heading the right way.
According to project spokesperson Kengo Saito:
"With most current navigation systems, you have to look at a handset display as you walk. Looking at the screen while walking can be dangerous. But with this system, all you need to do is be aware of the LED light while you walk."
No word on if or when we'd ever see something like this out in the wild—it's still just a prototype after all—but it seems like it'd be a cool way to move around a crowded city. Until someone steals your computer glasses, that is.