Method of electronic settlement with a mobile terminal

A method of electronic settlement in a system in which commodity information display units installed at sites for payment, a sales control server for controlling the display units, a server for controlling mobile terminal each incorporating therein an electronic camera or an artificial retina chip, and an authentication server for authenticating the mobile terminals are connected through a network such as the Internet, and also in which the authentication server and the sales control server are connected to each other through a dedicated communication line and electronic settlement is performed by using the mobile terminals, said method comprising the steps of:

• photographing commodity information consisting of characters and displayed on the display unit;
• transmitting the photographed image data via the mobile terminal server to the authentication server;
• authenticating the mobile terminal and restoring the image data to the image information consisting of characters;
• and
• transmitting the authenticated personal information and the commodity information via the dedicated communication line to the sales control server.