Google Wallet FUD
Amazing how the comments went straight to assuming that a problem with Apple Pay == a problem with Google Wallet. Know why Google Wallet doesn't suffer from this? After all it's been around for years, Android devices are plenty available and if it allowed this type of attack, why would it be just now that we have this issue?
I've used Wallet for years, the only way you can add a card requires 2 factor authentication. https://support.google.com/wallet/answer/3230760?hl=en
Just because you're a fan of Apple, please stop assuming that they are the only way of doing things and thus every issue found in an Apple device is an issue found elsewhere. It gets old and annoying.