A casino is a venue where people play games of chance. They usually have several different kinds of games, such as slots, keno, blackjack, roulette, and baccarat.

Security is a major concern for casinos. They spend a lot of money and time to protect the patrons.

They have many layers of security. There are employees who watch over every game and every patron, looking for signs of cheating or theft. There are pit bosses and table managers who look over their tables, keeping an eye on betting patterns and making sure no one is stealing from other players.

In addition, they have cameras and computers that constantly monitor the games. These systems can spot any anomalies quickly and alert casino operators to them.

Some casinos also use microcircuits in their betting chips to track how much is being wagered minute by minute. This technology is used to monitor roulette wheels and other games, and it allows the casinos to detect any suspicious changes in the numbers that are spun on the wheel.

In addition to these measures, casinos often give out free drinks and other things to their patrons. These can be a reinforcer to encourage people to play more. This helps the casino to make more profit.