Brazil's e-payment system is challenging financial power across the Americas

In less than five years, Pix - Brazil's free, instant payment platform - has reshaped the country's financial landscape. More than 150 million Brazilians now use it daily, from big-city retailers to street vendors and homeless people. Its explosive growth has sidelined credit cards and cash, making Brazil one of the world's leaders in digital payments. But this homegrown fintech experiment is making waves far beyond Brazil: US officials and banking lobbyists see Pix as a potential threat to American-controlled payment systems like Visa and Mastercard. The World's Tibisay Zea brings us this report from Sao Paulo, Brazil.