In what year was the first commercial product scanned using a Universal Product Code (UPC) barcode, marking a revolutionary change in retail history?

Before digital payments and AI recommendation systems, one innovation fundamentally transformed retail history. The introduction of barcodes revolutionized inventory management, checkout processes, and retail data analytics. This poll explores a pivotal moment in retail history that shaped modern consumer experiences and set the foundation for today's sophisticated retail technology landscape.

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1974 (A pack of Wrigley's chewing gum at Marsh Supermarket in Ohio)
1969 (A carton of Marlboro cigarettes at Kroger in Cincinnati)
1981 (A bottle of Coca-Cola at Walmart in Arkansas)
1952 (A loaf of Wonder Bread at A&P in New Jersey)