A remote controller device 2 sends its own ID code when specifying an access destination to a main device 1. Upon receipt of an access command from the remote controller device 2, the main device 1 appends the ID code of the remote controller device 2 to information obtained by accessing the access destination and outputs the same. The remote controller device 2 takes in the output only when it is appended with its own ID code and displays the same on a display unit 25. Thus, the user can confirm the information the main device 1 has obtained from the network 7 on the display unit 25 of the remote controller device 2. Consequently, the risk that the information is seen by anyone around can be reduced, thereby making it possible to improve the security on the private information.