CARD CAPABLE OF PERFORMING AUTHENTICATION BY RADIO-ACTIVE MATERIAL CHIP

摘要

Authentication of a card is performed. A radio-active substance is mixed in a card and arrangement of the mixed radio-active substance is detected indirectly by detecting a scintillator or directly by a radiation detection element, thereby performing authentication of the card. Authentication of the card is performed upon entry of the card or after entry of the card by reading information in the authentication chip arranged on the card. Read may be performed in a planar form but read in linear form reduces the processing load. The read line shape may be an arbitrary straight line or a curved line by modifying the read position correlated with movement of the card when the card is inputted. When the card inputted into a terminal device is judged to be an appropriate one such as a forged one, the card is ejected or the inputted inside and an alarm is issued.