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

The retail landscape has been transformed by numerous technological innovations aimed at improving operational efficiency and customer experience. One of the most significant developments in recent decades has been the introduction of self-checkout systems, which fundamentally changed how customers complete their shopping journey. This poll tests your knowledge about the origins of this retail technology that has now become ubiquitous in stores worldwide.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

1992 at Walmart in Arkansas, USA
1986 at Price Chopper in New York, USA
1992 at Marks & Spencer in London, UK
1998 at Carrefour in Paris, France