I looked into the Neurosky and Emotiv headsets the other day for a side project. They've been on the market for a while, but most reviews are pretty cautious.<p>The Neurosky headset appears to suffer from inconsistent readings, and is mostly really good at picking up muscle movement (head turning, blinking) - great if that's what you're after, but terrible if not.<p><a href="http://www.colorfulwolf.com/blog/2009/12/13/mind-control-for-the-masses-neurosky-mindset/" rel="nofollow">http://www.colorfulwolf.com/blog/2009/12/13/mind-control-for...</a><p>The Emotiv headset has some mechanical issues - the pads are a pain to wet and place and keep falling out. The data also appears to be super encrypted and quite hacker-unfriendly, so I stopped reading there.<p><a href="http://www.joystiq.com/2010/01/27/review-emotiv-epoc-tough-thoughts-on-the-new-mind-reading-cont/" rel="nofollow">http://www.joystiq.com/2010/01/27/review-emotiv-epoc-tough-t...</a><p><a href="http://thingist.com/t/item/23089/" rel="nofollow">http://thingist.com/t/item/23089/</a> (some angry words)
Interaxon demoed a mind controlled version of a Zen Bound 2, a game I've worked on, few years ago.
<a href="http://vimeo.com/18307473" rel="nofollow">http://vimeo.com/18307473</a><p>I never got to test it though.