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

The way we shop has been transformed by countless innovations, but few have changed the customer experience as dramatically as self-checkout technology. This technology represented a major shift in retail operations, transferring some responsibility from employees to customers while promising shorter lines and greater efficiency. But do you know when and where this revolutionary retail technology first appeared in stores?

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