The Luhn algorithm dates to 1960 and is still in use on credit cards: https://en... | Hacker News

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pjc50 on July 6, 2017 | parent | context | favorite | on: Fixing bugs like it's 1988

The Luhn algorithm dates to 1960 and is still in use on credit cards: https://en.wikipedia.org/wiki/Luhn_algorithm

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