| 摘要 |
PROBLEM TO BE SOLVED: To provide valuable papers, capable of preventing unfair utilization by discriminating the cheating of the same and capable of reutilizing the papers when the papers can be taken back to a regular control source, and the preventing method of unfair utilization of them. SOLUTION: A fine IC chip 104 is mounted on valuable papers 103, such as bills, stocks or the like, while the memory device of the IC chip 104 stores a lock information 511 and a lock key. The lock information 511 retains a condition of either one of lock/unlock. A business server 105 reads the condition of the lock information 511 through an IC chip reading device 407 and will not start a business process when the condition is not under the condition of unlock. A control server 101 communicates with the IC chip 104 through an IC chip reading and writing device 307 to certify that the lock key 513 is right and, thereafter, changes the condition of the lock information 511 if necessary. |
