rubyonrailsin

Hey there,

I have Spree up and running with PayPal and Check Payment methods,
because I've heard about the strict rules and security measures you
need to take to process Credit Card Payments directly. I'm ready to
implement Credit Card Processing now.

My question is, what are the basic things I need to know to get a
business up and running with Credit Card processing in Spree? I know
I need the gateway (using Authorize.net), and a Merchant Account with
a bank, and ActiveMerchant. But I'm not sure how to remember their
credit card info for future purchases.

More specifically, the end goal would be to have the customer enter
their credit card info once, and every time after that when they
checkout, they just say "yes, this is the correct credit card, use
that one", like how Amazon does it. Because it's best practice to not
store the credit card info on the merchant's server, how do you
present the credit card (as say "***********1234") to the customer? I
don't see the connection. What information are we storing, what
information are we getting from the gateway (say Authorize.net), and
how do we get that info from the gateway (like the starred out credit
card number and their billing info)?

I've read the following things, among others:

- http://www.activemerchant.org/
- http://peepcode.com/products/activemerchant-pdf
- http://spreecommerce.com/documentation/checkout.html
- http://37signals.com/svn/posts/753-ask-37signals-how-do-you-process-credit-cards

But I just don't see the connection. How do I "remember" my customers
credit card without storing it in the database?

Just looking for a practical tutorial or blog post about it :).
Thanks so much,
Lance

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