In online shopping or the like via the Internet, a user transmits information indicating a credit card number or the like from a client computer of the user to a server of a mail-order dealer. Before such information is actually transmitted, the client computer displays an object selected depending on the importance level of the information which is going to be transmitted and moves the object from a location close to an information providing agent representative of an agent for the user to a location close to a shop agent representative of an agent for the mail-order dealer. Displaying the object in such a manner makes it possible for the user to recognize that the information is going to be transmitted and recognize the importance level of the information. After completion of moving the object, the client computer actually transmits the information to the server.