| 摘要 |
A playing cards security system for detecting when additional playing cards are added to a deck of playing cards. The system includes a deck of playing cards where each playing card of the deck of playing cards has predetermined indicia provided thereon. The predetermined indicia of the each of the playing cards is the same as the predetermine indicia of the other playing cards of the deck of playing cards. The predetermined indicia is viewable under ultra-violet light and hidden from view under ambient light.
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