When and where was the world's first self-checkout system installed for commercial use?

The retail landscape has been transformed by technological innovations that change how we shop. One of the most significant developments in retail technology has been the introduction of self-checkout systems, which altered the traditional checkout experience forever. Test your knowledge about this revolutionary retail technology that has become ubiquitous in stores worldwide.

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1992 at Walmart in Arkansas, USA
1986 at Price Chopper in New York, USA
1992 at Checkout Machines Inc. facility (demonstration only, not commercial)
1992 at Price Chopper in New York, USA