In which year was the first commercial barcode scanner used in a retail store, marking a revolutionary change in point-of-sale technology?

The point-of-sale (POS) system has transformed how retailers conduct business throughout history. From manual cash registers to sophisticated digital solutions, these systems have evolved dramatically over decades. This poll tests your knowledge about a pivotal moment in retail POS history that changed how stores operate worldwide. Do you know when modern barcode scanning technology first appeared in retail environments and revolutionized checkout efficiency?

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1974 (Marsh Supermarket in Troy, Ohio with a pack of Wrigley's chewing gum)
1952 (Woolworth's in New York City with a Hershey's chocolate bar)
1981 (Walmart in Rogers, Arkansas with a bottle of Coca-Cola)
1967 (Kroger supermarket in Cincinnati, Ohio with a loaf of Wonder Bread)