This goes nowhere. If you're using someone else's money to buy stuff, or a card that is a pointer through someone else's processing network, that someone will n

This goes nowhere. If you're using someone else's money to buy stuff, or a card that is a pointer through someone else's processing network, that someone will necessarily be able to see where it's being used. You might as well ask for web servers to not see the IP address of people connecting to it.