11. The interfacing device of claim 7 , wherein the control unit is further configured to: receive, from the server, a request for checking whether to apply an associated content provider determined by the server, and check whether to apply the associated content provider determined by the server, and to transmit a result of the checking to the server.
11. The interfacing device of claim 7 , wherein the control unit is further configured to: receive, from the server, a request for checking whether to apply an associated content provider determined by the server, and check whether to apply the associated content provider determined by the server, and to transmit a result of the checking to the server. 12. The interfacing device of claim 11 , wherein the control unit is further configured to execute the associated content provider when applicability of the associated content provider is accepted.