Storing Credit Card Numbers in SESSION - ways around it?

Question

I am well aware of PCI Compliance so don\'t need an earful about storing CC numbers (and especially CVV nums) within our company database during checkout process.

Howev

Answer 1

You could store a hash of the card nr in session and the same hash and the actual number and the user's session id in a database. Then for each page you can check the hash and the session info to get the card nr.