this post was submitted on 09 Nov 2023
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Yeah. It's really a UI issue at this point. Just a simple frontend to facilitate SEPA transactions to contacts (which could just be a simple Name -> IBAN map stored locally)
I could imagine something like an IBAN protocol - open an IBAN link as in iban://AB26374838388 directly with your banking app and auto fill the bank transfer menu. Only add the amount of money you want to transfer.
No idea what other implications that would have e.g. for security though
Oh, add an
?amount=32โฌas well as atext=Pizzaparameter and you're almost there ...Separate
?amount=32andcurrency=Euroto add currency support.I thought about that, but I think it's actually more error prone, because people might just be setting
?amount=32and leaving outcurrencywhich might lead to unexpected behaviour. Implementors tend to interpret this differently and one app might take the default currency and the other might fail to accept it, and that kind of different behaviour is a common source of security issues. Having a single unified parameter that must always contain the value and currency "solves" that issue.Makes it a bit more annoying to parse, though I definitely see your point.
However, you're still proposing a standard: "has to include both the currency and the amount in the parameter", so why not split them up at that point?