What was the first retail product ever scanned with a barcode scanner in a commercial transaction?

The barcode transformed retail forever, revolutionizing inventory management and checkout experiences. This seemingly simple pattern of black and white lines dramatically reduced checkout times, improved inventory accuracy, and paved the way for modern retail analytics. But do you know when this game-changing technology first appeared in retail stores? Test your knowledge about this pivotal moment in retail history!

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A pack of Wrigley's chewing gum
A carton of Coca-Cola
A loaf of Wonder Bread
A package of Kellogg's Corn Flakes