In Brazil the central bank has such system for free, it's called PIX and is so good and simple to use that some fintechs lost a good chunk of their market share

In Brazil the central bank has such system for free, it's called PIX and is so good and simple to use that some fintechs lost a good chunk of their market share. You only need your National ID or an email. It became even an expression "send me a pix"