Boffins at the University of Electro-Communications in Tokyo have come up with a gizmo which will direct you around a town by tugging your ear.

Their ear-tugging navigator looks like a bug-shaped hat and was being shown off I the "Emerging Technologies" area of SIGGRAPH '09, the 36th international conference on computer graphics and interactive techniques. Dubbed Pull-Navi, has six helmet-mounted motors to pull the wearer's ears forward, backward, left, right, up and down.

Psychologically people follow the machine's advice instinctively. Apparently humans work just like horses in that regard. However it does mean that you can connect the gadget to your phone and get exactly where you want to go quite quickly.  Of course you will look silly and will have red ears by the time you get there.