Originally Posted by
MilkPowder
It's especially handy when the check-out clerk wants to see a picture ID when you're making credit card purchases.
Cardholder ID
Although Visa rules do not preclude merchants from asking for cardholder ID, merchants cannot make an ID a condition of acceptance. Therefore, merchants cannot refuse to complete a purchase transaction because a cardholder refuses to provide ID . Visa believes merchants should not ask for ID as part of their regular card acceptance procedures. Laws in several states also make it illegal for merchants to write a cardholder's personal information, such as an address or phone number, on a sales receipt. P. 29, Visa Merchant Card Acceptance Policy]
(from:
http://consumerist.com/2008/02/apple...agreement.html)
MasterCard reportedly the same:
http://www.mastercard.com/us/wce/PDF...ire_Manual.pdf