| 摘要 |
<p>PURPOSE:To prevent the easy forgery of an information storage card and also to easily identify a regular card by providing a hologram part having the proper reflecting characteristic on the surface of the card. CONSTITUTION:A card 1 contains a hologram part 4 of the proper reflecting characteristic on its surface. Then a card reader/writer is provided with a means 5 which irradiates the part 4 with the illumination light, a means 7 which received the light reflected from the part 4, and a means 8 which detects the intensity of the reflected light received by the means 7 and identifies the regular card 1. In such a constitution, the card identifying operation is not complicated and at the same time the hologram equal to the part 4 of the card 1 is analyzed in order to avoid the easy forgery of the card 1. Thus the forgery of the card 1 can be prevented.</p> |
