[justsomehnguy]

> I doubt very much it is suitable as an alternative to credit/debit cards for retail payments. For one thing, there's zero fraud protection, it's the electronic equivalent to paying for something with a cashier's check. For another, it's a pretty laborious process - you have to sign in to your online banking, enter the recipient's bank account details and the correct transaction reference, probably do some kind of 2FA.

It's already solved, just point your app to the QR code generated by the same terminal you use for CC.

[toomuchtodo]

Indeed, this is how Venmo works today for business payments and Zelle in general. It is a trivial implementation.