Can you pay a popcorn seller in the mid of a street in seconds by just scanning a QR code? Then it debits from your bank account to the popcorn seller account

Can you pay a popcorn seller in the mid of a street in seconds by just scanning a QR code? Then it debits from your bank account to the popcorn seller account in < 1 second? This is the reason Visa and Mastercard are being beaten hard on this market.