dLocal ACI Worldwide Pact Opens Pix to Global Merchants. Payment Methods Available NowIn Brazil, merchants gain access to Pix, the instant payment system operated by the Brazilian Central Bank that has become the country’s dominant digital payment method. Understanding how OXXO Pay works helps explain why local methods matter so much. In Brazil, Pix has overtaken credit cards in transaction volume, while in Mexico, cash-based vouchers like OXXO remain essential for reaching unbanked consumers. In Brazil: Pix, PicPay, Mercado Pago, and NuPay.