Funnily enough, the form in the original post validated my credit card number as... | Hacker News

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adnrw on March 31, 2014 | parent | context | favorite | on: How to Correctly Detect Credit Card Type

Funnily enough, the form in the original post validated my credit card number as Amex and then validated a 3-digit CVV number as OK.

davekt on March 31, 2014 [–]

Some amex cards have a 3 digit cvv [1].

[1] http://ecommerce.shopify.com/c/shopify-discussion/t/heads-up...

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