Didn't get a mention in the article but Singapore's PayNow is magical. Direct bank-to-bank transfers that operate instantly 24/7, and for free. QR code-based so it's not uncommon to pay at retail outlets with this method; some shops will only accept PayNow or cash, because they're free. You can also pay directly to someone's NRIC (national ID number) or mobile number so you don't have to tack in their bank details or get a QR code from them.
Honestly the only thing that isn't perfect about this system is that there's no hyperlink standard. If you want to pay a PayNow QR code on your phone, you have to screenshot the QR code and then share it to your banking app. Would be nice if you could just tap the QR code. Other than that it's hard for me to imagine a better payment system.