You see a mysterious coin block from another realm floating around the streets of Germany, you don’t just touch it. You call the Landespolizei! They’d have told this lady, for example, that touching it would put the people of Offenburg in grave danger.
Researchers at a German university have built an apparatus that, while clunky in its proof-of-concept stage, could assist the blind as they cross streets, walk down hallways and open doors. It uses the Kinect as a sensor.