A casino is a place where people can gamble on games of chance or skill. The games can include table games (like blackjack, roulette and poker), slot machines and other electronic devices. Casinos typically require players to be of legal gambling age and follow the rules and regulations of the establishment.
Casinos spend a lot of time and money on security. They have cameras that are constantly watching the action at all tables and slots. The cameras can be adjusted to focus on specific patrons if a suspicious pattern emerges. Moreover, casino employees keep their eyes on the patrons to spot cheating and stealing. Casinos also reward big spenders with free hotel rooms, meals, shows and even airline tickets and limo service. These freebies are known as comps.
Something about casinos attracts people who are willing to cheat, steal and scam their way to a jackpot. This is why casino employees keep their eyes on the patrons, and why they are trained to look for suspicious patterns. They can be as subtle as the way a dealer shuffles cards or the location of the betting spots on the table.
The statistical advantage built into most casino games gives the house an edge that is very small, but over millions of bets it adds up to enough money for the owners to invest in spectacular hotels and to decorate them with fountains, towers and replicas of famous monuments. Casinos also make a good living by charging the vig, or rake, on games that pit players against each other, like baccarat, roulette and craps.