video games more challenging. Using a "pulseoxymeter" sensor, users can control games by physical movement, while the difficulty and speed of the game are adjusted to the heart rate of the player. The system is meant to be used for maintaining the appropriate level of exertion during exercise, based on a physical response. Of course, all the exercise in the world won't make that bad looking knock-off of Breakout any more fun. Check the video after the break.