On September 14, 2018, the Fintech Facilitation Office of the Hong Kong Monetary Authority (HKMA) published the Implementation Guideline on Common QR Code for Retail Payments, which is applicable to payment service providers (PSPs) providing quick response (QR) code payment solutions, to adopt the single and combined QR code standards designed by the Working Group on Common QR Code Standard for Retail Payments in Hong Kong.