by loren_d_c » Fri Jan 16, 2009 1:03 pm
If it's arbitrary info that you don't need to actually be in the shopping cart or in the resulting order, then you could set it in a cookie before the shopper gets to the cart, and then from your custom Order API you can read the cookies in the shopper's browser (assuming the cookie is set from the same domain as the secure shopping cart URL), and capture the information that way.
-Loren