California based NeuroSky demonstrated a Brain interface for mobile phones at the CTIA 2008.
The NeuroSky brain sensor measures brain wave activity and connects that with actions performed on a mobile phone.
The Brain sensor is integrated in a headset style gear. The Brain sensor communicates with the mobile phone via Bluetooth.
The shown demo actually did not include any real tasks you would perform on a mobile phone yet. The most advanced was a game that had users move a character around.
You cannot think of numbers or names that you want to call yet - Sorry!

More details and photos on Tech-On. Via FashionFunky.

We reported about NeuroSky the first time in 2007.