A sign has a sign plate mounted in a frame to display an image such as the word \u201cEXIT\u201d when illuminated. The OTP semiconductor device further includes an isolation region laterally separating the programming dielectric from a coupled semiconductor structure, where the isolation region can be used in conjunction with the patterned electrode and the implant region to protect the coupled semiconductor structure. The winding device also comprises an end piece adapted to contact the outer surface of the other end of the object and to hold the object in a desired position for rewinding. The security status determines the security level of operating the computer system. In some examples, the response may indicate that all the data was received. The audience can thus view images provided by a moving robot.