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How do swipe card systems work?

Updated: 10/22/2022
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14y ago

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It reads the card to see if the card is valid or not if tje crad is n ot valid it rejects the crad but if the crad is accepted the ouput 1 turns on and starts the system of withdrawing the money. This is a very basic answer. :(

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14y ago
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Q: How do swipe card systems work?
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