I've got a client that wishes to use their obscure payment gateway that offers an embeddable checkout form. Someone here is I'm sure familiar with it, I'd think it's fairly standard these days: you first, on the server, send a request (with a unique id and some initial transaction data) to a gateway server using curl or whatever, and the gateway sends you back a secure token. You then use that token to embed and iframe and then send the client an embedded iframe that has a form requesting card data.
This is a way to ensure PCI Compliance.
Are there any modules in zencart that use this method, that maybe I could read the source code to get an idea of how it works to build a custom payment module?
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