>Think of the positive places this could go!

My first thought reading it was that some coma patients could finally 'talk' to their loved ones and doctors (e.g., http://www.dailymail.co.uk/news/article-1230092/Rom-Houben-P... ).

My second thought was wondering whether we could crowd-source the origin. For example, multiple people sending commands, with the majority command being acted upon. Creepy, but potentially cool (I'm not sure what this says about me.).

My third thought was wondering whether the receiver would develop 'muscle memory' of the actions taken. In other words, could the receiver learn how to do certain movements.