In 2007, design student Sebastian Ritzler developed a concept for a cane full of features called Mygo. It contains a sensor-camera combo to measure the ground below it and give the user real time feedback via a wireless headset. The cane also ends in a small wheel that uses a steering engine that helps the user steer by providing feedback through the grip.
The Mygo is supposed to be height-adjustable, tough, and waterproof and runs on a lithium-ion battery (6 hours power).
We are not sure, whether it has yet gone into production. Sounds interesting anyway.