| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic ticket utilization system, etc., for utilizing information corresponding to described items of a ticket, etc., without issuing the ticket, etc., on which the described items are printed. SOLUTION: When a portable terminal 2 sends the items, etc., of a ticket and a personal identification number to a ticket issuing server 1, the server 1 performs a digital signature on a digital ticket including data representing the described items of the ticket and the personal identification number, further converts it into a two-dimensional bar code and sends the bar code to the portable terminal 2. The terminal 2 stores the two-dimensional bar code and displays the two-dimensional bar code stored in the terminal 2 itself according to a user operation. An entrance managing device 4 reads the two-dimensional bar code displayed by the terminal 2 and acquires and authenticates the digital ticket with the digital signature. The device 2 also collates the personal identification number inputted by the owner etc., of the terminal 2 with the personal identification number in the digital ticket with the digital signature. When the authentication is successful and the collation of the person identification numbers is also successful, information showing the effect is outputted. |
