Kaliann writes "Toys that respond to brainwaves are the next generation of unique user interfaces. The Washington Post looks at the current market appeal and future uses of technology that can meaningfully respond to the thoughts of a user. Currently the toys have a fairly simple basic idea: the harder you concentrate the more the object moves. A sensor on the forehead picks up brain waves that are associated with concentration, then levitates a ball in response: basic biofeedback. While this may seem to be a rather humble beginning, progress in this field could have astounding consequences in the advancement of technologies devoted to thought-controlled devices. As the author points out, Jedi Beer Pong is within our grasp."