If you think Sudoku or Crosswords are a great brain workout, you are only scratching the surface. NeuroSky’s MindWave Mobile lets you flex your mental muscle (and measure progress!) without moving a finger. MindWave Mobile is the world’s most affordable research-grade Brain Computer Interface (BCI) and this well-designed device includes a headset that communicates via Bluetooth with both mobile (iOS and Android) and desktop (Mac/PC) applications centered around exploration, education, and gaming. The MindWave is a great tool for keeping your brain sharp, visualizing your brain waves, and building innovative brain-controlled applications. Stay sharp. Stay focused. Stay fresh.