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Domino game is also popular in gambling. Like marked cards, we can also process normal domino with invisible ink. The luminous marks can be seen by contact lenses. Marked domino can greatly increase your winning odds.
Marked Domino is processed on the regular domino brick. The invisible ink be formulated by senior ink technician according to different material of the domino. It makes the special mark invisible for naked eyes, but just under the infrared contact lenses. Clear invisible marks.