By now, you've probably started thinking about your Christmas shopping and you might pay for a lot of it on a debit or credit card, but how do those card readers actually work? Well, when you insert your card, the machine works to read the information along the magnetic strip, the machines also make electrical contact with the embedded chip on the card - the users pin is then encrypted, once you've typed in the correct pin, the payment is authorized!
Happy shopping!
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