These programs exist covering most types of commerce, each one having varying features and rewards-schemes.
In marketing generally and in retailing more specifically, a loyalty card, rewards card, points card, advantage card, or club card is a plastic or paper card, visually similar to a credit card, debit card, or digital card that identifies the card holder as a participant in a loyalty program.
Loyalty cards (both physical and digital) relate to the loyalty business-model.
Cards typically have a barcode or magstripe that can be easily scanned, although some are chip cards or proximity cards.
By presenting such a card, purchasers typically receive either a discount on the current purchase, or to an allotment of points that they can use for future purchases.
Hence the card is the visible means of implementing a type of what economists call a two-part tariff.
Application forms for cards usually entail agreements by the store concerning customer privacy, typically non-disclosure (by the store) of non-aggregate data about customers.
The store uses aggregate data internally (and sometimes externally) as part of its marketing research.
Over time the data can reveal, for example, a given customer's favorite brand of beer, or whether he or she is a vegetarian.
Where a customer has provided sufficient identifying information, the loyalty card may also be used to access such information to expedite verification during receipt of cheques or dispensing medical prescription preparations, or for other membership privileges such as access to an airport lounge using a frequent-flyer card.
Loyalty programs have been described as a form of centralized virtual currency, one with unidirectional cash flow, since reward points can be exchanged into a good or service but not into cash.
The Social Credit System is a loyalty program operated by the state and private businesses.