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 designed to enhance customer experience and operational efficiency. One of the most significant developments in recent decades has been the self-checkout system, which fundamentally changed how customers complete their shopping journey. Test your knowledge about this retail innovation milestone that has become ubiquitous in stores worldwide and continues to evolve with new technologies.

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1992, Price Chopper supermarket in New York
1987, Walmart in Arkansas
1998, Tesco in London
2001, Carrefour in Paris