About 150 million Brazilians use Pix, the central bank's instant-payment rail - nearly nine in ten adults - only a few years after it launched in 2020.
Pix is a free, instant payment system built and run by Brazil's central bank, which is why it spread across the country in a few years, not a few decades.
It reached most of Brazil within three years of launch, pulling in people who had never held a card.