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Luminous ink and infrared contact lens kits
Almost everyone know marked cards tricks, and many of them want to make marked cards by hand. What we need to prepare if we want to mark cards with invisible ink?
The crucial factor is luminous ink kit and infrared contact lens. How to make luminous ink at home? How to make an invisible ink pen with lemon juice? There has a secret juice deck formula and juice card marking system to mark playing cards. You can buy luminous ink online directly. After applied luminous ink to playing cards, you need to use infrared contact lens to detect invisible ink marked card poker.