Which retail technology invention, first used commercially in 1974 on a pack of Wrigley's gum, revolutionized checkout systems and inventory management?

The history of retail is filled with revolutionary inventions that transformed how we shop. From barcode scanners to self-checkout systems, technological discoveries continue to reshape the retail landscape. This trivia question focuses on a pivotal innovation that fundamentally changed retail operations worldwide and set the stage for modern inventory management and pricing systems.

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