Copag Texas Holdem PeeK Index Marked Deck
How long does a perspective deck be used? The players that have not used perspective marked cards may no idea, even some players did not know perspective marked cards. In fact, perspective marked cards look like the normal playing cards on the appearance, so other will not suspect the cards.
It's normal that one deck of playing cards becomes old or bad and player change with a new deck. Usually the invisible ink of marked deck may last longer than the playing cards becomes old. The using time of perspective marked playing cards are same as the normal playing cards. And the times you use will affect the using life of the marked cards. Perspective marked cards are used special invisible ink with professional machine to print the marks on the back, using the perspective contact lenses and glasses, you can see the numbers and suits on the back.