For instance, in Sweden, "Swish"[0] has quickly taken over the market for casual payments, with free, instant, irreversible bank transfers between individuals using only the recipients phone number (or a QR code).
They are a bunch of these systems, but currently they are all fractured into national systems, although work has started on adding interoperability[1]
[0] https://en.wikipedia.org/wiki/Swish_(payment)
[1] https://en.wikipedia.org/wiki/European_Mobile_Payment_System...