Patent ID: 7606903

Claim:
A method for conducting data communication between an electric device and a specific server provided by a specific IT service provider through an access point provided by a wireless LAN service provider, the method comprising: requesting by the electric device the data communication with the specific server by the access point of the wireless LAN service provider, judging by the access point whether or not the data communication is requested by a person who is not a subscriber to the wireless LAN service provider and whether or not the data communication is directed to the specific server, specially permitting the data communication by the access point when the access point judges that the data communication is requested by the person who is not a subscriber to the wireless LAN service provider and that the data communication is directed to the specific server, and permitting the data communication by the access point to both the specific server and a server other than the specific server when the access point judges that the data communication is requested by a person who is a subscriber to the wireless LAN service provider.