A casino is a place where people can gamble and play games of chance. It can be a large resort or a small card room. It can also be a bar or an entertainment venue. Regardless of size, casinos make billions of dollars every year. They are owned by people, companies, investment banks and Native American tribes. They operate in many different states and countries. Some are built on land, while others are found on cruise ships and in racetracks converted to racinos.

Because of the large amounts of money involved, casinos must be careful not to allow cheating or stealing by patrons or employees. Security measures include the use of cameras, which are constantly monitored by security workers. Cameras are located throughout the casino, and the systems can be adjusted to focus on suspicious areas or to monitor the activity of individual patrons. Some casinos employ an eye-in-the-sky system that allows security personnel to monitor the entire casino from a room filled with banks of screens.

In addition to cameras, casinos rely on other methods to deter fraud and theft. For example, casino floor managers are trained to look for unusual betting patterns that might indicate a crooked player. They are also responsible for enforcing the rules of conduct at each table game and watching the actions of patrons to ensure that they are following the rules of the game. Casinos also use bright lights to attract patrons and keep them moving around the gambling area.