In retail history, what was the first product ever scanned with a UPC barcode at a checkout counter in 1974?

In the history of retail technology, few innovations have transformed the shopping experience as dramatically as the humble bar code. This standardized method of product identification revolutionized inventory management, checkout efficiency, and supply chain logistics. But do you know when and where this retail technology milestone first occurred? Test your knowledge of this pivotal moment in retail history that fundamentally changed how products move from manufacturer to consumer.

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A 10-pack of Wrigley's Juicy Fruit chewing gum
A carton of Marlboro cigarettes
A bottle of Coca-Cola
A loaf of Wonder Bread