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

The retail landscape has been transformed by technological innovations that change how we shop. Among these, self-checkout systems have dramatically altered the customer experience, reducing wait times and changing store staffing models. But do you know when this revolutionary technology first appeared in retail stores? Test your knowledge about this significant retail innovation that has now become commonplace in stores worldwide.

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1992 (at Kroger in Atlanta, Georgia)
1984 (at Safeway in San Francisco, California)
2001 (at Tesco in London, England)
1978 (at Carrefour in Paris, France)