stackyFACTSYour plastic payment card does not just have random digits. It uses the Luhn algorithm, meaning if you add and multiply specific numbers together, they must end in a zero, catching simple typo errors before a transaction even leaves the terminal.
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Major commercial airlines routinely make more operating profit from selling frequent flyer miles to massive credit card companies than they do from actually…
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If you bounce entirely too many checks or abandon an overdrawn account, institutions report you to a hidden database. For the next five years, almost no…
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The bedrock of modern financial security is heavily reliant on one random woman's refusal to remember a slightly longer string of numbers. John…
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If you forget about your money for a few years, the state will kindly absorb it for you. Through a process called escheatment, perfectly good funds in dormant…
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Switzerland issues a one-thousand-franc banknote that is among the highest-value circulating bills in the world, accounting for over sixty percent of all…
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Which everyday banking mechanism generates billions in massive profit strictly from the poorest customers?
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