| 摘要 |
PROBLEM TO BE SOLVED: To automatically update an age on the basis of an age inputted at the time when a ticket or a card is previously issued in the case of subsequently issuing a ticket or a card after the ticket or the card is issued. SOLUTION: A date traced back by a personal age from a date when the age has been inputted is calculated as an age calculation reference date and stored in the ticket or the card. When a new ticket or card is issued by using the ticket or the cord in which the age calculation reference date is stored, an age is calculated with the age calculation reference date assumed as the date of birth, if the calculated age coincides with a real age, the calculated age is adopted as a new age, but is the calculated age is different from the rear age, the real age is inputted and adopted as a new age, and a new calculation reference date is also calculated and stored again on the basis of the corrected age.
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