Brazil's government-run payments system has become dominant

I've been living in Brazil for the last 20 years.

Pix revolutionised the way we transact in Brazil. I've used Pix to pay for things that cost only cents, and I have a friend who bought her house using Pix. The system just works for any transfer amount. And it's so easy to use.

Its speed is truly baffling, and so is its reliability. Never have I failed to make a Pix payment because of downtime. I never cease to be amazed by how fast money arrives in my Brazilian account when I make a withdrawal directly from my EUR wallet on Wise. I receive a push notification from my Brazilian bank before Wise finishes running the animation of confirmation of withdrawal. It's like magic.

And it's so widespread that nowadays I don't even question whether someone accepts Pix. When I get in a taxi, no matter how old the driver is, it's certain that they take (and prefer) Pix.

I've even had homeless people ask me for Pix instead of change on multiple occasions.

Cryptocurrencies don't stand a chance.

While I agree cryptocurrencies don't stand a chance, my experience with qr systems has been a mixed bag. The country I live in has a fairly good qr code payment system. But there was one day when the largest bank went down and that was chaos (cash very much has a role to play). We also supposedly have linkage with India's UPI. Unfortunately, it was impossible for me to actually use that linkage thanks to the way upi works (I think only some subset of banks are supported).

QR codes are problematic. First of all, you can’t really verify it with your naked eye. It can take you to a fake site that looks just like the original. Using phone numbers is vastly superior.