The communication device which implements the target device location indicating function, the motion visual image producing function, the non-motion visual image producing function, and the auto backing up function. The target device location indicating function indicates the current location of the target device, the motion visual image producing function retrieves the motion visual image data from the camera, the non-motion visual image producing function retrieves the non-motion visual image data from the camera, and the auto backing up function transfers the data stored in the communication device to another computer for purposes of storing backup data therein.