| 摘要 |
PROBLEM TO BE SOLVED: To prevent authentication information such as a personal identification number or password input by a user from being stolen by a third party, without reducing user's convenience.SOLUTION: An information processing system includes: a client device including an input unit consisted of multiple keys; a server; and a display terminal. The server determines whether or not a user to be identified with user identification information, which is transmitted from either one of the client device and the display terminal for identifying a user, is a registered user, and when the user to be identified with the user identification information is determined to be the registered user, it determines a value allocated to each key constituting the input unit. The display terminal generates an image for displaying the value, which is determined by the server and is allocated to each key, on each corresponding key, and it executes control so as to display the generated image and each key constituting the input unit in a superposing manner. |
