Fit Freeway is the combination of our popular Final Freeway racing game and BitGym, the incredible workout system from Active Theory Inc. Place your iPad 2 or iPhone 4/4s on your cardio machine and start racing! There is no need for special cables or additional items. All you need is an iPad 2 or an iPhone 4/4S and a copy of Fit Freeway. BitGym’s system translates the exercise machine vibrations into car speed in the game. Steering is achieved by moving in the head left and right in font of the iPad 2 or iPhone. BitGym’s head tracking technology will detect head movements and translate that into steering controls in the game. Source: The Publisher Website.