Let me be clear: there is no solid security measure which cannot be defeated by a determined thief. When the Christians are gone, they will try the best-possible solution that will STILL be subject to fraud: implanted chips, possibly with biometrics. Good luck with that.
The old swipe-yer-card-in-the-reader credit cards are easy to physically copy, and you just need a photo of the front and/or back, maybe, depending how you plan to use the card. The new wave-yer-card-near-the-display cards can be read and accessed from large distances, then copied or used to approve transactions remotely. But supposedly they are more secure because you have to know a PIN. Well, kinda. These are being phased in by law here soon, at which point my banks will no longer be able to honor my demands for a non-RFID enabled card (current count in my wallet: zero) and I’ll go to a metal wallet to shield my money.
Anyway the very newest of the new technology is not quite as secure as they thought, maybe. Turns out with a cell phone waved NEAR someone’s wallet, a hacker can authorize up to a million-dollar transaction on your card.