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

Self-checkout technology has transformed the retail landscape, offering customers greater convenience and autonomy while creating new operational efficiencies for businesses. This innovation has evolved significantly since its first implementation, changing how we interact with retail spaces and influencing store designs worldwide. Test your knowledge about this retail innovation that has become ubiquitous in modern shopping experiences.

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1992 (Price Chopper supermarket in New York)
1984 (Walmart in Arkansas)
2001 (Tesco in London)
1978 (Kroger in Cincinnati)