| 摘要 |
PROBLEM TO BE SOLVED: To provide cards which can detect fraudulent act in a card game on site. SOLUTION: On a card surface on which a mark is printed, two rows of codes 42, 44 corresponding to the mark are printed with UV light emitting ink. A prescribed interval is arranged between the codes 42, 44 in a direction crossing the reading direction of a code reader. For instance, one code 42 represents a suit (spade, heart, diamond, club) and the other code 44 represents a rank (1-10, J, Q, K). COPYRIGHT: (C)2008,JPO&INPIT
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