As soon as someone innovates something, someone else finds a way to hack it. If this does become available technology, add one recording/playback device. (I'm that it would be LESS complicated to do that, than the building of the abovementioned device and could well be quite miniturised..) Or invent software sofisticated enough to collect the brainwave data while you are generating it. This would be in the same vein as keystroke recognition software. Now that would be a hacker's dream come true...
Cheers, DH66

The article does not say how fast the system is. That would be key if it is to be used as a "passthought".

Nice!
We at Starlab have done some work on this area as well using our Enobio system. Just google "biometry eeg enobio"!