Which retail technology innovation from 1974 fundamentally changed checkout processes worldwide and is considered one of the most significant retail advancements of the 20th century?

The history of retail is marked by technological innovations that revolutionized how people shop. From the earliest cash registers to modern e-commerce platforms, technological advancements have shaped consumer experiences throughout history. Test your knowledge about a pivotal moment in retail technology history that changed shopping forever!

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The UPC barcode scanner, first used commercially at Marsh Supermarket in Troy, Ohio on a pack of Wrigley's gum
The electronic point-of-sale (EPOS) system, first implemented by McDonald's for fast food ordering
The first credit card verification system, introduced by Bank of America for in-store purchases
The electronic price tag system, pioneered by Kmart to eliminate manual price labeling