We're trying to implement file downloads on our site - we want to sell PDFs. However, we would like to stamp/watermark every pdf with the user's name and order information upon download.
I'm guessing this is possible, but I could not find a mondule that performs this currently. Does anyone know of anything that is in work? The only thing I could find was PDF Stamper: http://drupal.org/project/pdfstamper - but this stamps incomming fils and it is NOT what we are looking for.
And IF nothing is out there or in work - can anyone offer any sage advice on how big of a project this would be to enable this?