In what year was the world's first self-checkout system implemented in a retail store?

Self-checkout technology revolutionized the retail experience by allowing customers to scan, bag, and pay for items without cashier assistance. This innovation has dramatically changed store layouts, labor allocation, and customer journeys in retail environments. While commonplace today, the introduction of this technology represented a significant shift in retail operations and customer expectations. Test your knowledge about when this retail innovation first appeared in stores.

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1992 (Price Chopper supermarket in New York)
1984 (Kroger supermarket in Ohio)
2001 (Tesco supermarket in London)
1997 (Walmart Supercenter in Arkansas)