ATM card

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An ATM card is a dedicated payment card card issued by a financial institution (i.e. a bank) which enables a customer to access their financial accounts via its and others' automated teller machines (ATMs) and, in some countries, to make approved point of purchase retail transactions. ATM cards are not credit cards or debit cards, however most credit and debit cards can also act as ATM cards and that is the most common way that banks issue cards since the 2010s.

ATM cards are payment card size and style plastic cards with a magnetic stripe and/or a plastic smart card with a chip that contains a unique card number and some security information such as an expiration date or CVVC (CVV). ATM cards are known by a variety of names such as bank card, MAC (money access card), client card, key card or cash card, among others. Other payment cards, such as debit cards and credit cards can also function as ATM cards. Charge and proprietary cards cannot be used as ATM cards. The use of a credit card to withdraw cash at an ATM is treated differently to a point of sale transaction, usually attracting interest charges from the date of the cash withdrawal.

Interbank networks allow the use of ATM cards at ATMs of private operators and financial institutions other than those of the institution that issued the cards. The difference between an ATM card and a debit card is the underlying network used to process the transaction. Some debit card networks started their lives as ATM card networks before evolving into full-fledged debit card networks that include eftpos facilities.