an interface device that enables a severely handicapped individual to control a telephone to place and terminate calls and to carry on a conversation regardless of whether the individual can speak or use his or her hands . a personal computer is programmed to display a menu for the handicapped individual to read wherein a selectable area of the menu is active for a period of time . after the period of time , the next selectable area of the menu is active for another period of time . the program makes each menu selection active in a predetermined order . a sensor that detects voluntary motion of the handicapped individual is connected to a transducer that converts the motion detected into a computer input , such as a mouse “ click ,” which selects the active area on the menu . advantageously , the process may begin again or may move to another menu , depending upon the item selected .