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Anyone who has an Amex would notice this immediately. The last digit is the Luhn check digit and the digit before that increments each time a card is issued, st
by sjtgraham 11y ago
Anyone who has an Amex would notice this immediately. The last digit is the Luhn check digit and the digit before that increments each time a card is issued, starting from 0.
- viraptor 11y agoEither it's only a specific kind of amex, or it's not starting from 0, or this is incorrect information. I've got 2 AMEX cards - one reissued and ends with 0, another issued the first time and ends with non-0. (I'm ignoring the check digit)
- sjtgraham 11y agoI've just pulled a load of expired my Amex cards. It looks like I got the incrementing digit wrong. On my cards it's the 4th from last that increments. UK Amex FWIW.