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Yo­u're short on cash, so you walk over to the automated teller machine (ATM), insert your card into the card reader, respond to the prompts on the screen, and within a minute you walk away with your money and a receipt. These machines can now be found at most supermarkets, convenience stores and travel centers. Have you ever wondered about the process that makes your bank funds available to you at an ATM on the other side of the country?

In this article, we will look at the ATM device that allows you access to your money and examine the network that the ATM connects to.