I was all set to agree with you, but then I looked up VISA's Merchant Agreement online [pdf]: http://usa.visa.com/download/merchants/rules_for_visa_merchants.pd

I was all set to agree with you, but then I looked up VISA's Merchant Agreement online [pdf]: http://usa.visa.com/download/merchants/rules_for_visa_merchants.pdf http://usa.visa.com/download/merchants/rules_for_visa_mercha... I was surprised to see on page 28 that it is considered a security feature.