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A comment on The number input is the worst input. Parent comment

Re:The number input is the worst input by jameshart on Thursday September 15, 2022 @08:25PM (#32860350)
the digits you parse out of a credit card number are used in a numerical algorithm. That's not the same thing at all.
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Re:The number input is the worst input by lucas_membrane on Friday September 16, 2022 @04:28AM (#32863601)
Vehicle identification numbers, which follow an international standard, also have a check digit, even though they contain alphabetic characters.
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Re:The number input is the worst input by jameshart on Friday September 16, 2022 @07:14AM (#32864597)
ISBN codes too - checksum is base 11 so can be represented by a digit 0-9 or an ‘X’ in the final place.
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