An easy-to-use EEG cap could expand the number of ways to interact with your mobile devices.  It reads brainwaves (correlated brain rhythms) using a dry EEG cap.

NY Times Blog: Disruptions: Brain Computer Interfaces Inch Closer to Mainstream

About the Author

The Miller Lab uses experimental and theoretical approaches to study the neural basis of the high-level cognitive functions that underlie complex goal-directed behavior.