Since the very first casino opened its doors, an endless war has raged between the operators trying to protect their money and the criminals trying to steal it.

The casino's "Eye in the Sky" catches most of them eventually, but recognizing the signs of a scam unfolding right next to you is a fascinating skill.
How Cheaters Manipulate Casino Chips
Past posting occurs when a cheater incredibly quickly and silently adds additional chips to their winning bet exactly a split second after the winning outcome is determined.

This scam requires absolute, flawless timing, massive distraction, and the steady, lightning-fast hands of a professional close-up magician.
Past posting involves adding chips to a bet after the player already knows they have wonIt is also called "late betting" and is most common on the crowded, chaotic roulette tablesCheaters use palm-palming techniques to hide the extra chips in their hands Card Marking and Edge Sorting
In card games like Blackjack and Baccarat, the entire house edge relies entirely on the fact that the next card in the shoe is a complete mystery.

A more sophisticated, highly controversial method popularized by poker legend Phil Ivey is known as "edge sorting."
Dice Sliding at the Craps Table
The craps table is extremely difficult to cheat due to the massive size of the table, the required wall-bounce, and the presence of four highly trained dealers.

This mathematically alters the probability of hitting a 7, giving the cheater a massive, incredibly illegal advantage over the house.
Cheater ActionDealer Counter-MeasurePinching (Stealing back a lost bet)Clearing losing bets before paying winnersMarking Cards with fingernailsReplacing the entire shoe of cards frequently
Attempting to cheat a modern casino is an incredibly foolish endeavor that almost universally ends in severe felony charges and prison time.