Meet the PLX XWave headset. The device's manufacturer claims that it makes it possible to control your iPhone with your brain.
According to the company's website, the XWave, which is powered by NeuroSky eSense's patented technology can detect faint electrical impulses transmitted through the skull. From there, it converts these signals to digital instructions.
The headset will set you back $99.99, we still aren't completely sold on how well it can do what it claims. But $100 does seem like a lot of money just to test the thing out.