Comment by evolve2k
4 days ago
If we want our bank to add suppprt for GrapheneOS and specifically for “tap to pay” on GrapheneOS, without Google pay, what technically and specifically should we be asking for?
4 days ago
If we want our bank to add suppprt for GrapheneOS and specifically for “tap to pay” on GrapheneOS, without Google pay, what technically and specifically should we be asking for?
I wish I had a good answer for you! I don't think there's anything specific they need to do for GrapheneOS. They "just" need to use Android's NFC API[0] and then do the necessary magic incantations to implement the relevant payment scheme, i.e. exchange data with the credit card terminal and talk to the bank's backend servers. How exactly that works… no idea. But if there's anyone who knows it's them!
There was a time when I thought about figuring this out in detail and building an open-source alternative to Google Pay. But from what I've heard, integrating with credit cards is not something that can be done in an agnostic manner but actually requires support and buy-in by the issuing banks. Not a great perspective for such an app.
[0]: https://developer.android.com/develop/connectivity/nfc/nfc