Which country first implemented widespread 'smart shelves' technology that uses RFID and weight sensors to automatically track inventory in grocery stores?

The world of retail technology has evolved differently across geographical regions, with various innovations taking root in different markets. Some technologies have become synonymous with specific countries due to their widespread adoption or origin. Test your knowledge about how retail tech has developed across the global landscape and which regions have become known for particular advancements.

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Japan
Germany
United States
South Korea