Way to detect marked cards contact lenses
How to detect if people use luminous ink contact lenses during casino game?
When you play casino game, how to check if others using cheating products, like marked cards, juice cards contact lenses or infrared poker camera?
When someone uses invisible ink marked cards, they need to wear playing cards contact lenses or luminous glasses. If it is infrared glasses, it is easy to discover because glass is different in color; if they wear marked cards contact lenses they can see the things around them clearly except for the invisible ink marking hidden on playing cards.