A Casino is an establishment for gambling. Unlike your grandmother’s bingo hall, the modern casino is like an indoor amusement park for adults, with the majority of its entertainment (and profits for its owners) coming from games of chance. Slot machines, blackjack, roulette, baccarat and craps all contribute to the billions of dollars casinos earn annually.

But, despite their surface decadence (and the fact that many of them are built to rival the scale of Vegas), casinos are not for everyone. They are often smoky, loud and have an unmistakable seedy edge.

Despite the slew of security measures, casino patrons remain vulnerable to certain threats. That’s because, as Poley explains, “the rules and patterns of casino games follow certain predictable and predetermined sequences.” The ways dealers shuffle cards or place bets on the table are designed to make it easy for security personnel to spot suspicious behavior. The same applies to the expected reactions and motions of players at a game; this information is picked up by cameras and other monitoring devices.

In the twenty-first century, casinos have become choosier about who they allow to gamble in their premises. They focus their attention on the high rollers, who spend tens of thousands on bets. In return, they are offered comps that can include free hotel rooms, dinners, show tickets, limo service and airline tickets. Casinos are also able to calculate the odds of winning or losing in each game. While this information can’t be guaranteed, it gives gamblers some idea of their chances of making a profit.