A casino is a place where people can play a variety of games of chance for money. Usually it includes table games like blackjack, roulette and craps as well as slot machines. Some casinos also feature entertainment such as stage shows and dramatic scenery to add to the excitement. A casino can be part of a larger complex including hotels, restaurants and retail shops or it may stand alone as a separate building.
The term casino has come to be used for a variety of establishments that house gambling activities, but it is most commonly associated with Las Vegas and other places where large crowds gather to gamble. Casinos have a long history in the United States and are found throughout the world. They are generally open to anyone over the age of 21. They are primarily visited by tourists and business travelers. In 2005, the average casino gambler was a forty-six-year-old woman from a household with above-average income.
Casinos employ many security measures to keep their patrons safe and the games fair. Security starts with the dealers themselves, who keep a close eye on their tables and can quickly spot any suspicious behavior, such as palming or marking cards. Other staff watch the larger group of players to make sure that they follow certain patterns, such as betting in sequences.
A more modern approach is the use of technology to monitor and supervise the games themselves. For example, the chips in a casino game are designed with built-in microcircuitry to enable casinos to track the amount of money wagered minute by minute and warn them of any statistical deviations from expected results. Roulette wheels are electronically monitored regularly to discover any anomalies in the way they spin.