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I have both an iPhone with Apple Pay and an Android with NFC and Google Pay (previously known as Android Pay before the rebranding). Did you know that you can

by cnst 5y ago

I have both an iPhone with Apple Pay and an Android with NFC and Google Pay (previously known as Android Pay before the rebranding). Did you know that you can use Android NFC to read the full 16-digit card number of any contactless card, including the Apple Pay cards from an iOS device? The ones that are so secure you can't even see them within the interface of Apple Pay itself? And which have to be stored in a special storage on the device such that you're limited to only 8 or 12 cards, depending on the generation of the Apple Pay device? I don't think you can even do that on an iPhone, since Apple Pay is apparently the only app that's allowed to use the NFC chip.

dwaite 5y ago
> I don't think you can even do that on an iPhone, since Apple Pay is apparently the only app that's allowed to use the NFC chip. CoreNFC: https://developer.apple.com/documentation/corenfc https://developer.apple.com/documentation/corenfc
heisenzombie 5y ago
Yeah, although that number isn't the original card number, it's a "Device Account Number" which is unique to a specific device. I believe it's a pretty useless number to know. It can only be used in combination with a cryptographic challenge-response which verifies the particular device and matches the "Device Account Number".