When and where was the world's first commercial self-checkout system installed in a retail environment?

The retail landscape has been transformed by numerous technological innovations over the decades. One of the most significant advancements that changed the shopping experience forever was the introduction of self-checkout systems. These systems not only reduced wait times but also fundamentally altered staffing models and customer experiences in retail environments. Test your knowledge about this pivotal retail technology milestone!

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