Juice marked cards

Juice marked cards are very popularity in European countries, if you are a poker player, you must know them, even you have ever used juice marked cards.

Juice marked cards are usually used to play magic tricks or poker, they are marked by a kind of invisible ink, we usually can't see the marks by naked, but the users can see the marks with contact lenses or marked cards sunglasses, thereby the users can know the suits and numbers of all the cards. If you have never heard of juice marked cards, maybe there are others who use the juice marked cards play with you, you have found something different from them, but you have no evidence to prove that you have doubt and don’t know what have they done, so juice marked cards can help you, if you are familiar to juice marked cards, you can detected the cheating way and protect yourself well from the game.