Hi Dubz.
I appreciate your interest in this subject, but I have to warn you that reading someone's credit card it is a crime in many states.
I may sound a little bit conformist in saying this, but you should stop asking this kind of things on the forum unless you want that people (some people) may start thinking Arduino is something used to make swindles & cheating around.
If yours was just curiosity, I suggest you to look towards others topics.
Ciao
Davide