An instructables on adding bluetooth to an EEG headset for mind-controlled projects by AndreLe:
I had serial bluetooth module HC-06 lying around and decided to see if I could integrate the two and skip the Arduino altogether. Turns out, it works almost as good as the commercially available NeuroSky MyndWave for a quarter of the cost, and looks completely unmodified!
Finally, I came across a wonderful open source application by Trent Brooks that forwards your EEG signals on via OSC so you can use it in your MAX/MSP, Processing, or other projects.
Via Instructables.