The Nakajima Lab at the University of Electro-Communications in Tokyo was developed the Wearable Personal Navigation System.

The system equipped with a battery, LEDs, a microcomputer with GPS receiver, and a magnetic direction sensor.

To use it the user first inputs the destination. Then GPS detects the current position, and the direction sensor detects which way the user is facing. In this way, the system guides the user to the destination

Here’s a video (shot by DigInfoNews in Tokyo):