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

Retail technology has transformed how we shop over the decades. Among the most significant innovations was the introduction of self-checkout systems, which fundamentally changed the customer experience and store operations. This technology represented a major shift in retail strategy, balancing labor costs, customer empowerment, and operational efficiency. Test your knowledge about this pivotal retail innovation that has become ubiquitous in modern commerce.

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