A casino is a place where people can gamble and play games of chance. A casino usually has a lot of different gambling games, but it also has bars, restaurants and other entertainment. Some casinos are very luxurious, with lots of special effects and even stage shows to entertain the audience. Some casinos are more basic, but they still offer gambling.
Casinos make money by charging a percentage of bets to players. This is called the vig or rake and is typically lower than two percent of total bets. The rest of the revenue is earned from other activities, such as table game commissions and machine fees. Casinos also collect taxes on winning bettors.
Historically, the biggest casino profits have come from mobsters. However, mobster connections to casinos have weakened in recent years as hotel and real estate developers have purchased and run casino properties. Government crackdowns on mob influence and the threat of losing a gambling license at the slightest hint of Mafia involvement have also helped keep legitimate casino businesses away from the mafia.
Security starts on the casino floor, where employees are trained to spot cheating and other violations of the rules. This includes paying attention to the way patrons move around a table or how they make bets, as well as watching their facial expressions and body language for signs of dishonesty. Other security measures include video cameras, chip tracking (betting chips with built in microcircuitry that communicates with a central system that oversees bet amounts minute-by-minute) and electronic monitoring of roulette wheels for statistical deviations from expected results.