Not for online, for physical purchases. Another fundamental/SHOCKING difference between Europe vs USA is that when you pay with your card in a restaurant in Europe, the waiter brings the POS over to you, while in the USA the waiter disappears with everyone's cards for 5mins ;)
Not good security is it? They can take their time to scan/photograph the cards etc, while in Europe the card's details are for seconds and right in front of you.
Not good security is it? They can take their time to scan/photograph the cards etc, while in Europe the card's details are for seconds and right in front of you.