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

The retail landscape was forever changed when barcode scanning technology was introduced, revolutionizing inventory management and checkout processes. This innovation transformed how products were tracked and sold, creating the foundation for modern retail operations. Test your knowledge about this pivotal invention that bridged traditional retail with the digital age and set the stage for today's advanced retail technologies.

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A pack of Wrigley's chewing gum
A carton of milk
A loaf of Wonder Bread
A can of Campbell's soup