In which year was the first commercially successful self-checkout system implemented in a retail store?

Self-checkout systems transformed retail by reducing wait times and operational costs. This innovation represents a fascinating intersection of technology and consumer behavior that changed how we shop forever. Test your knowledge about this retail technology breakthrough that has become ubiquitous in modern stores around the world.

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1992, at Price Chopper supermarket in New York
1987, at Walmart's flagship store in Arkansas
2001, at Target's innovation lab store in Minneapolis
1998, at Tesco's experimental location in London