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A comment on Answering Every Question You Have About IMEI Numbers. Parent comment

Re:Answering Every Question You Have About IMEI Numbers by toxik on Tuesday April 30, 2024 @04:07PM (#40215687)
Many non-American SSN systems do have check digits.
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Re:Answering Every Question You Have About IMEI Numbers by cesarb on Tuesday April 30, 2024 @04:32PM (#40215952)
The Brazilian CPF (our equivalent to the SSN) goes up to eleven (literally) by including not one, but two check digits; IIRC, the first one (the tenth digit) is computed over the first nine digits, and the second one (the eleventh digit) is computed over the first ten digits.
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