Pricking
Pricking is a cheating technique in which a cheater marks cards with a fingernail or a device. The marks help him to recognize the cards later.
The simple explanation
A cheat who pricks cards makes tiny marks on the back or edge. He can then see which cards they are.
A closer look
Pricking is one of several marking techniques, along with waving. Casinos change decks and inspect them to find such marks. If you notice marks on cards, tell the floor at once. The word is also called punctuating.
A practical example
A dealer sees tiny dents on the back of several cards and calls the floor to replace the deck.
Full explanation
Pricking is a cheating technique in which a cheater marks cards with a fingernail or a device. The marks help him to recognize the cards later.
Pricking is marking cards with a nail or device.
It helps a cheater to know the cards.
Casinos inspect decks.
Report marked cards.