A headset that reads your brainwaves: Tan Le's astonishing new computer interface reads its user's brainwaves, making it possible to control virtual objects, and even physical electronics, with mere thoughts (and a little concentration). She demos the headset, and talks about its far-reaching applications.

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Tan Le, co-founder and president of Emotiv Systems, gives a live demo of a mind control device that uses a person's thoughts to input computer commands. Marvin Minsky participates as guinea pig.

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