| 摘要 |
A first invention is a method wherein individual security information in which accidental change data are provided are created and, in order to judge whether a security is genuine or not, the individual security information about the security and the accidental change data of the security are collated with each other. A second invention is a method wherein the accidental change data are produced from printed record including accidental factors by using two-dimensional codes. A third invention is a security which has individual security information in which the accidental change data are provided. A fourth invention is a method wherein the accidental change data information is provided on a security of the third invention by printing and recording the accidental change data. |
