http://www.gizmag.com/bodywave-arm-band-pc-mind-control/21116/
A bio-feedback armband called BodyWave is the first of its kind to measure brainwave activity through the body, not the scalp. Instead of an EEG headset recording a user's concentration level, the Bodywave reads brainwaves at the arm by measuring the electric current given off by neurons firing in the brain. Bundled with an interactive software package called Play Attention, it reportedly enables interactive feedback and training towards peak mental performance.
