In what year was the world's first commercially successful self-checkout system, called 'Service 1000,' invented and installed in a supermarket?

Throughout retail history, technological innovations have transformed how we shop. From cash registers to barcode scanners, these inventions have shaped modern commerce. But the self-checkout kiosk represented a particularly significant shift in retail operations, changing the customer experience forever. Test your knowledge about this pivotal retail innovation that changed the face of shopping worldwide and revolutionized store operations.

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1992 (Price Chopper in New York)
1984 (Sainsbury's in London)
1998 (Walmart in Arkansas)
2001 (Carrefour in Paris)