How to recognize the Copag marked cards during the live poker tournament or cash game to prevent me from marking cards using invisible ink or dust, in case some one using custom-made glasses to see the luminous ink markings when others get those marked cards in subsequent hands?
The best way is buy a pair of invisible ink contact lenses, then you can see the markings, that you can replace the regular playing cards yourself.
In the casino, it would be difficult to make the luminous ink mark on the decks without being seen. Unless they use the machine printed Copag marked playing cards to replace the normal deck in advance.
So the contact lenses or the luminous reader glasses would be your first choice to make yourself not be cheated in the poker game.