In walking stick for the blind has been around since the beginning of blindness. Okay, that was a bad intro, but you see my point: the walking stick, does not require a lot of improvement.
Of course, this is a modern human nature to take what must be gross and simple, and add to the technology. For example, Tactile cane stick is a device that uses a distance sensor to detect objects in front of the user. It is obvious that the closer fit to the object, the greater the vibration.
Many gadget blogs were holding this device a "Wiimote for the blind." I must admit that there are uncanny similarities, as well as the fact that she has a "shaker" inside will not remove this particular moniker at any early date.
However, we should not discount the ability of the device actually help people. It seems to me that a blind person can easily adapt to that device, and to improve their mobility without the use of traditional stick. I am interested to know if there is a way to make stick Tactile detection of potentially harmful things that are not solid, such as an open elevator shaft.
In Tactile stick is the cradle of replenishment, which addresses more obvious problems: the need for power. You certainly do not want to be a blind person depends on Tactile wand, only that it is not you at a critical moment.
Right now, the Tactile wand exists only in concept, but it certainly has great potential.