| 摘要 |
A certificate issuing method includes inputting individual information of a certificate issuance requester, creating electronic data of a board having a background pattern that differs from certificate to certificate on a part thereof, overwriting individual information on the background pattern in the electronic data of the board with characters, entering a relation between the background pattern and the overwritten characters onto the board, and printing the electronic data as a certificate. A certificate verifying method includes converting the certificate to electronic data, reading a relation between a background pattern and overwritten characters on the certificate, extracting a region in which individual information is overwritten on the background pattern with characters, from the certificate, effecting a check to determine whether the background pattern and the characters in the region satisfy the relation, and judging the certificate invalid when the background pattern and the characters do not satisfy the relation.
|
