In which year was the first self-checkout system installed in a retail store?

Self-checkout technology has dramatically transformed the retail landscape, changing how customers interact with stores and how retailers manage their workforce. But do you know when this revolutionary retail technology first appeared in stores? Test your knowledge about this pivotal moment in retail technology history that set the stage for today's increasingly automated shopping experiences.

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1992 (Price Chopper supermarket in New York)
1984 (Kroger in Cincinnati)
2001 (Walmart Supercenter in Arkansas)
1978 (Sears department store in Chicago)