I couldn't even get the cards on my Coin Credit Card. When I tried to get their customer support, they advised me it was only by email, and that they did not have a phone. I actually got my bank to back this off. Their refund policy stated that it would take up to four months to get a refund. Oh, and by the way, this does not work if you have a chip in your card. This is a huge rip off.
Bottom Line: No, I would not recommend this to a friend