Individual identification card system

Abstract

To provide an individual identification card system of higher security. An individual identification card system of this invention comprises: (1) random number generating means for generating random numbers; (2) an individual identification card at least having recorded on it an individual identification code made by affixing a random number generated with the random number generating means to an individual fixed code peculiar to the individual; (3) individual identification card recording means for recording on the individual identification card an individual identification code including an updated or additional random number when a specified event occurs; (4) collation-purpose information control means which controls for collating the same code as the individual identification code recorded on the individual identification card; and (5) collating means which reads the individual identification code recorded on the individual identification card to collate with the code controlled with the collation-purpose information control means.

Dependencies are inferred from the claim text.