Data input devices for physically handicapped people have already been developed. One simple device detects the blowing action of the operator as input signals to select desired menu items. Another advanced device detects eyeball movements as input signals. One problem associated with these advanced data input devices is that the operator is often obliged to wear a sensor or device. In this work a data input device operated using eye movements is presented. An important feature of our system is that the operator is not obliged to wear a sensing device.