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

The retail landscape has been transformed by numerous technological innovations over the decades. One of the most impactful changes to the customer experience has been the introduction of self-checkout systems, which revolutionized how shoppers complete their purchases. This innovation significantly altered retail staffing models, store layouts, and customer flow management while addressing challenges in the retail experience. Test your knowledge about this pivotal retail technology breakthrough!

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1992, at Price Chopper in New York
1987, at Walmart in Arkansas
2001, at Tesco in the United Kingdom
1998, at Carrefour in France