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You can also use a checksum like in IBAN, I have implemented some auto-detection of mistranscribed input based upon that over here: https://github.com/globalcit
by contingencies 9y ago
You can also use a checksum like in IBAN, I have implemented some auto-detection of mistranscribed input based upon that over here: https://github.com/globalcitizen/php-iban https://github.com/globalcitizen/php-iban