Contact lenses is one of the most important playing cards cheating tricks, as it can be used to detect the invisible ink markings on the backs of marked playing cards.
Compared with the infrared sunglasses used to detect invisible ink, contact lenses can provide better using experience for poker players as it is more closer to user eyeballs and can concealable after wearing. No matter what color your eyes are, you can choose the best suitable one from us. For example, if your eyes are dark brown, the 9mm invisible ink contact lenses for playing cards is highly recommended, because they can cover the iris of user that no one can find them. If there are back marked playing cards in the poker table, you can see the marks indicates point and suits of each piece of them easily.
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