When was the first commercial use of a barcode scanner in a retail store?

The history of retail technology has transformed how we shop. One innovation stands above many others in revolutionizing inventory management and checkout efficiency. This poll tests your knowledge about the historical implementation of barcode technology, which fundamentally changed retail operations worldwide and paved the way for modern inventory systems. Do you know when this retail revolution began?

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1974, at Marsh Supermarket in Troy, Ohio with a pack of Wrigley's chewing gum
1969, at Walmart's first store in Rogers, Arkansas with a bottle of Coca-Cola
1981, at Target in Minneapolis, Minnesota with a box of Cheerios cereal
1963, at Kroger supermarket in Cincinnati, Ohio with a carton of milk