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Money is exchanged for tokens in a casino at the casino cage, at the gaming tables, or at a cashier station. The tokens are interchangeable with money at the casino. They generally have no value outside of the casino, though in Las Vegas, some casinos might honor chips from other casinos[citation needed] and certain businesses (such as taxis or waiters—especially for tips) in gambling towns may honor them informally.

Tokens are employed for several reasons. They are more convenient to use than currency, and also make theft and counterfeiting more difficult. Because of the uniform size, regularity and coloring patterns of stacks of chips, they are easier to count in stacks compared to paper currency when used on a table. This attribute also enables the pit boss or security to quickly verify the amount being paid, reducing the chance that a dealer might incorrectly pay a customer. The uniform weight of the casino's official tokens allows them to weigh large stacks or piles of chips rather than counting them (though counting aids such as chip trays are far more common). Furthermore, it is observed that consumers gamble more freely with replacement currencies than with cash.[citation needed]

Finally, the chips are considered to be an integral part of the casino environment, and replacing them with some alternate currency would be unpopular.

Many casinos have eliminated the use of metal tokens (and coins), in their slot machines, in favor of paper receipts and/or pre-paid cards, which, while requiring heavy infrastructure costs to install, eliminate the coin handling expenses, jamming problems encountered in machines which took coins or tokens and can allow more game-specific technology in the space of a machine which would usually be dedicated to coin mechanisms. While some casinos (such as the Hard Rock Hotel in Las Vegas) which installed the receipt system had kept the $1 tokens around for use as $1 chips, most other casinos using the receipts had simply scrapped the tokens entirely. Most casinos using receipts have automated machines at which customers may redeem receipts, eliminating the need for coin counting windows and decreasing labor costs.
A standard 300 piece set of Plastic Injection chips often sold as "clay composite" chips

Casino chip collecting is a part of numismatics, more specifically as specialized exonumia collecting. This hobby has become increasingly popular with the Casino Chips & Gaming Tokens Collectors Club formed in 1988. Some chips are worth up to $100,000 and the most popular way to collect and trade is on eBay. Several casinos sell custom-made sets of chips and one or two decks of cards stamped with the name of the casino on them. Each set is contained in a small briefcase or box.