Which invention, first used commercially in 1974 on a pack of Wrigley's chewing gum, revolutionized retail by enabling automated checkout and inventory tracking?

Throughout history, certain technological discoveries and inventions have completely transformed how we shop and interact with brands. From humble beginnings to global phenomena, these innovations fundamentally altered the retail landscape. This trivia question focuses on a pivotal invention that revolutionized product identification and tracking, leading to unprecedented changes in supply chain management, inventory control, and the overall shopping experience.

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