System and method for providing services employing trusted site indicators, and mobile device capable of displaying the trusted site indicators

A service providing system comprising:

• a network having
• an information providing server which provides information, and
• an authentication server capable of sending and receiving information to and from the information providing server;
• and
• a portable terminal capable of sending and receiving information to and from the network;
• wherein the information providing server is configured to send to the authentication server information requested by the portable terminal, address information associated with the information providing server, and tag information;
• wherein the authentication server has an authentication information database which stores authentication information;
• wherein the authentication server has a detector which detects the tag information;
• wherein the authentication server has a transmitter which sends to the portable terminal the requested information sent by the information providing server and the authentication information retrieved from the authentication database when the tag information is detected and the address information matches information stored in the authentication database;
• and
• wherein the portable terminal has a first display area which displays the requested information sent by the information providing server and a second display area which displays only the authentication information which specifically identifies the information providing server, the second display area being an independent screen area separate from the first display area, and the authentication information can not be edited by the portable terminal.