Security measures at casinos include elaborate surveillance systems. Cameras are installed in the ceiling to monitor every table, window, and doorway. Security personnel can adjust them to focus on suspicious patrons. Video feeds are recorded for later review. A casino’s security is also dependent on the technology it uses to determine the payouts of slot machines. The machines have computer chips which determine the payout amounts. As a result, no one physically watches the slot floor.

According to one survey, slot machines are the most popular game in a casino. More than half of the respondents preferred electronic gaming devices over other casino games. In contrast, nearly a quarter preferred blackjack, 8% preferred poker, 6% preferred craps, and 4% said they were not a gambler. The majority of respondents, however, indicated that they would rather play a casino game. The average percentage of the casino’s advantage is about one percent.

Security measures at a casino are constantly evolving. Computers and video cameras are routinely installed to monitor casino games. Casinos also use “chip tracking” in which betting chips have built-in microcircuitry. This helps casinos keep track of wagers minute-by-minute. The roulette wheel is also monitored to detect statistical deviations. The casino also has enclosed versions of games that don’t require a dealer. Instead, players push buttons to make their wagers.