On the MM/YY credit card it is the expiration date, and the one with 3 digits is the security code.
Credit card components
Get your card. Ever notice that his numbers don't make any sense in relation to your account and agency numbers? It's because all those serial numbers don't actually represent your registration at your branch, but your code and that of your bank in relation to the world records of credit companies.
A detail that is interesting to note is the representation of the first number of the cards. It represents the type of institution that mediates between consumer and credit company:
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On the MM/YY credit card it is the expiration date, and the one with 3 digits is the security code.
Credit card components
Get your card. Ever notice that his numbers don't make any sense in relation to your account and agency numbers? It's because all those serial numbers don't actually represent your registration at your branch, but your code and that of your bank in relation to the world records of credit companies.
A detail that is interesting to note is the representation of the first number of the cards. It represents the type of institution that mediates between consumer and credit company:
1: some industry sectors;
2: airlines;
3: business areas and related industry;
4, 5 and 6: banking institutions;
7: oil companies;
8: telecommunications;
9: national companies