Which country first implemented widespread use of QR code payment systems in retail, fundamentally changing in-store and online shopping experiences across its geography?

Retail technology adoption varies dramatically across different geographic regions, influencing consumer behavior and market competitiveness. Some regions have pioneered revolutionary retail tech that transformed how consumers shop locally and globally. This poll tests your knowledge about a significant geographic retail innovation that changed the industry landscape and set new standards for retail experiences worldwide.

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China (through Alipay and WeChat Pay systems)
Japan (where QR codes were invented by Denso Wave)
South Korea (through their KakaoPay platform)
Sweden (as part of their cashless society initiative)