PREPAID CARD FOR PACHINKO PLAY AND ILLICIT PLAY PREVENTING METHOD

摘要

PROBLEM TO BE SOLVED: To easily apply a prepaid card to a conventional system and to hardly perform illicit alteration. SOLUTION: This prepaid card 100 is constituted so as to have a magnetic data storage part 102 for storing the information of the remainder, etc., as magnetic data and a punch hole forming part 103 for displaying the remainder by forming a punch hole near the plural numerical values of the remainder printed in advance. In this case, illicit play prevention information 101 is printed by using unvisible dyes for the punch hole forming part 103.