Network communication

摘要

A portable communication device (1) automatically accesses a network server such as an ISP upon insertion of a card (30). The card (30) stores user-specific data setting conditions for controlled access to the server This allows different users to have controlled access according to their situation. For example a child may use a card for access confined to children's Web sites. The device (1) updates the card and encrypts the user data. Proxy servers are used to control access.