The Tactile Wand is a walking stick device that uses a distance sensor todetect objects in front of the user. Apparently, the closer you come toan object, the greater the vibration.
Many gadget blogs have been calling this device a "Wiimote for theblind". I have to admit that there is an uncanny resemblance, and thefact that it has a "shaker" inside won't remove this particular monikeranytime soon.