An occupant support system is disclosed for controlling a computer-generated representation of an object, comprising: (i) a support device comprising a plurality of support members configured to support an occupant, and a corresponding plurality of independently movably supported suspension systems such to provide at least one independent motion selected from vertical, lateral, tilt and azimuthal motions and longitudinal roll motion of the support members. The support system further comprises (ii) a plurality of sensors which are operatively coupled with the support members and configured to measure a parameter which is indicative of an input provided by the occupant, while occupying the device, in a hands-free manner and to produce a signal, wherein the input changes a state of the support device; (iii) a memory module comprising computer-executable instructions; and (iv) a processor operative to receive the produced signal and determine a state of the occupant support device based on the produced signal and the computer-executable instructions, and to provide instructions for controlling the computer-generated object representation.