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by StevePerkins
3684 days ago
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I can't tell if you're being cheeky or are just really young. Up until the past decade or two, it was very common to process credit cards by placing the card onto a tray with a slip of paper over it, and swipe a pressure bar over the tray. This physically caused the digits on the card to make an impression on the paper: http://cdn.toptenreviews.com/rev/misc/articles/4734/type-or-... Many credit cards today simply have the digits printed on them in ink, rather than raised lettering, so I don't know how this would even work half the time today. |
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It wouldn't and a lot of debit cards I know - at least in Europe - are issued exactly for that reason: So they don't work without online authorization.