Hacker News Reader

At some point, your customer's card expires, and you need to ask them to re-enter their details. New details -> new provider. It might take two years to migrate most of your clients - even if it isn't ideal, it's not like you're locked in forever.

View on HN

Not directly related, but we (Braintree) recently blogged about credit card expiration dates. Here is a snippet: "If you run a transaction in our gateway and enter a date in the past for the credit card expiration date, you may be surprised to discover that we don't validate it. We run the transaction knowing that the card is expired. Why do we do this? The short answer is that financial institutions will still approve transactions with expired expiration dates."

http://www.braintreepaymentsolutions.com/blog/credit-cards-a...

Not true. Dirty little secret - you can roll forward the expiration on a credit card with impunity. The expirations are because the magnetic strips wear, not for any security.

I have tried this before with my processor, and the transactions were denied because of no match on the expiration date.

Reply on news.ycombinator.com