Storing partial credit card numbers

Question

Possible Duplicates:

1. Best practices for taking and storing credit card information with PHP
2. Storing credit card details
3. Storing Credit Card Infor

Answer 1

Here in Canada, the usual way is to store the first 4 digit ( to identify the financial institution) and the 4 last digit to identify the credit card.

But be sure that you didn't break any laws.