A medical examination system includes a medical examination device and a control device to operate the medical examination device. The control device transmits signals including control signals accompanied by an identification code. The examination device is provided with a verifier to verify the identification code and is arranged to accept the corresponding control signals when the identification code is correct, and to reject the corresponding control signals when the identification code is not correct. The examination system further automatically communicates the identification code between the control device and the examination device.