Most people don’t think twice about getting money out of an ATM. Insert your bank card, enter your PIN, select the amount of cash you want to withdraw then take your money and carry on with the rest of your day. The entire process can take less than a minute.

Behind the scenes, deep in the heart of the machine is a sophisticated system of high-friction and smooth rollers, sensors and conveyors that ensure you always get the right amount of money every time. All of this is tucked away inside a heavy-duty safe weighing nearly 500 pounds with steel walls measuring half an inch thick.

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