Infrared contact lenses read invisible ink
People are familiar with contact lenses. Because contact lenses can bring you clear visibility effect if you are short sight. But do you know infrared contact lenses for marked cards? Infrared marked cards contact lenses can also help you see invisible ink marks backside magic secret marking playing decks.
Infrared contact lenses are processed with original lenses but remain the same appearance as common one. According to white light principle, this kind of marked cards contact lenses can see luminous invisible ink marks. And invisible ink marks backside marked decks are only could be seen through by infrared contact lenses. Therefore, these infrared contact lenses also called one to one marked cards contact lenses.
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