Abstract: Apparatus and method are disclosed for generating control signals for manipulating viewpoints and other objects of a computer generated virtual three dimensional space according to forces exerted by the feet of the user. The apparatus includes shoes, or pads, used beneath the user's feet containing sensors and circuitry for detecting force balances within and between the feet. Force balance signals are input to the computer system and used for generating program control data thereto. The control data are used as thrust and torque vectors for manipulating the location of the viewpoint, and orientation of the view within the virtual space. By intermixing the assignment of force balance signals to thrust or torque vectors various methods are derived for operating the apparatus to navigate the virtual space. The invention also functions as a man-machine interface for vehicular control and other machine control based on a user's exerted foot force or weight balance.