A possible solution for Google Wallet

User910824

Hello. Can the GrapheneOS developers make a standalone app, where we able to scan and make a copy of our cards signature using NFC antenna. if it is possible, we will able to use our phones to pay. Sorry for my bad english. I hope my point is clear.

gravity-reprint

User910824

You have a fundamental misunderstanding of how NFC and mobile payments work. This isn't possible, it's not as simple as fetching and repeating NFC payloads.

raccoondad

User910824 I wonder if there is any way to have a open source compatible NFC app for cards, probably not since I imagine the card number isn't actually being transferred...

User910824

gravity-reprint Got it. Thank you for your answer.

MarsTrue

User910824 I did just just that by putting my credit card under my phone case. as the saying goes, if it's stupid but it works then it's not stupid.

User910824

MarsTrue Good idea, but unfortunately it is not possible to put all the cards at the same time.

UndercoverBozo

MarsTrue you just blew my mind.

EmLeX932

User910824 If its a Curve Card you could have a multiple cards on the same one . Works as a stop gap solution for a single card inside a phonecase

[deleted]

I personally do not understand all this ado about using NFC payments and its absence on GrapheneOS hasn't affected me in any way. Even if you had it working, vast majority would still carry around a proper wallet for the rest of your junk. So why not use the real thing anyway? From reading around the internet (and it's hard to establish how much of it is mis/disinformation), NFC payments are arguably more secure but less private.

GeneralVerdacht

[deleted]

Here my understanding:

It depends on your personal preference, but digital cards offer also privacy enhancing safeguards like Tokenization. Which means that your Primary Account Number is bind by the process of Tokenization to the Device Account Number.

In the setup Phase of your app, the user has to provide the sensitive card information to the application to initiate the process of adding the card, but when this is done, the application will only safe the DAN and not the PAN. Which means if the user pays with the application, the seller will only see the DAN too.

Furthermore neither Apple nor Google selling the transactional history regrsinf their privacy terms in EU.

https://www.freecodecamp.org/news/how-apple-pay-works-under-the-hood-8c3978238324/