In which year and location was the world's first self-checkout system invented and implemented in a retail store?

The retail landscape has been transformed by numerous technological innovations over the decades. One of the most impactful developments changed how we complete our shopping trips forever, eliminating a significant bottleneck in the customer journey. This innovation has since become ubiquitous in modern retail environments, but do you know when and where this retail revolution began? Test your knowledge of retail innovation history!

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1992 at Walmart in Bentonville, Arkansas
1986 at Price Chopper in New York
1984 at ShopRite in South Brunswick, New Jersey
1992 at Price Chopper in Clifton Park, New York