INDIVIDUAL IDENTIFICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To make it difficult to refer to physical feature data of an individual while increasing the security of a terminal device or an individual identifying device of an individual identification system. SOLUTION: Both an ETC terminal device 11 and an individual identifying device 120 of an automobile 12 are equipped with random number generating devices 115 and 128, ciphering devices 113 and 123, and deciphering devices 114 and 124. The individual identifying device 120 is equipped with an iris input device 126. After mutual authentication is performed between the ETC terminal device 11 and individual identifying device 120 by using random numbers, iris data on a user 13 are inputted and collated with stored ciphered iris data to identify the individual. Consequently, an illegal act by altering the ETC terminal device 11 and individual identifying device 120 is prevented through the mutual authentication and it is made difficult to refer to physical feature data on an individual by ciphering the data to enhance the security of the system.