Which retail technology innovation, invented in 1952 but not widely adopted until the 1970s, revolutionized inventory tracking and is considered one of the most important retail technological breakthroughs?

The retail landscape has been dramatically transformed by technological innovations over the decades. From basic cash registers to sophisticated AI-powered systems, retail technology has continuously evolved to enhance customer experience and operational efficiency. This trivia question focuses on a pivotal technology that revolutionized inventory management and checkout procedures worldwide. Test your knowledge about this game-changing retail innovation!

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Universal Product Code (UPC) barcode system
Electronic point-of-sale (EPOS) terminals
Radio-frequency identification (RFID) tags
Self-service checkout kiosks