Which retail technology innovation, first implemented in 1974 at an Ohio supermarket, revolutionized inventory management and checkout processes worldwide?

Retail technology has dramatically transformed the shopping experience over decades. From the first mechanical cash register to today's AI-powered recommendation engines, technological innovations have revolutionized how retailers operate and how customers shop. This trivia question explores a pivotal moment in retail technology history that fundamentally changed the industry landscape and set the foundation for modern retail operations. Test your knowledge about this transformative retail technology milestone!

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Universal Product Code (UPC) barcode scanning
Electronic point-of-sale (EPOS) touchscreen systems
Radio-frequency identification (RFID) inventory tracking
Self-checkout kiosks