Hawker Benson Low, 55, does not like to fumble with loose change and prefers to go cashless. But the same cannot be said of every hawker at Tanjong Pagar Plaza Market and Food Centre, where he sells laksa and prawn mee.

"Some of them can't read the transaction amount that customers enter into their phones when scanning a QR code to pay," said Mr Low, who is also chairman of Tanjong Pagar Plaza Market and Food Centre's association.