White Stick for the Blind Gets Sensor Upgrade with "Tactile Wand"

Designer Jin Woo Han has created the "Tactile Wand" as a 21st-century conceptual white stick for the blind. The rechargeable gadget uses some sort of distance sensor and communicates by buzzing, letting the user know of upcoming obstacles: the stronger the buzz, the nearer the object. Neat design, Jin, but can it… » 3/07/08 4:08am 3/07/08 4:08am