Which grocery item was the first product ever scanned with a barcode scanner in a retail store transaction?

The modern shopping experience we take for granted today was dramatically transformed by certain key inventions. One such discovery revolutionized retail inventory management, drastically reducing checkout times and transforming supply chain efficiency worldwide. Test your knowledge about this pivotal retail technology that changed how businesses track products and manage inventory across the globe.

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A 10-pack of Wrigley's Juicy Fruit chewing gum
A carton of Carnation milk
A loaf of Wonder bread
A pack of Marlboro cigarettes