iBrain, A Device That Can Read Thoughts

04/03/2012 11:30 am ET | Updated Jun 03, 2012
  • DAVID EWING DUNCAN nytimes.com

Already surrounded by machines that allow him, painstakingly, to communicate, the physicist Stephen Hawking last summer donned what looked like a rakish black headband that held a feather-light device the size of a small matchbox.

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