In which year and at which supermarket chain was the world's first self-checkout system implemented for commercial use?

The retail landscape has been transformed by technological innovations that changed how we shop forever. Self-checkout technology revolutionized the customer experience by reducing wait times and giving shoppers more control over their purchase process. This poll tests your knowledge about this significant retail innovation that has become ubiquitous in modern stores worldwide. Do you know when and where this retail game-changer first appeared?

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1992 at Price Chopper in New York
1986 at Kroger in Atlanta
1992 at Schnucks supermarket in Clayton, Missouri
1998 at Safeway in California