Which retail technology innovation was first introduced by IBM in 1973, fundamentally transforming checkout processes and inventory management across the retail industry?

The retail landscape has been transformed by numerous technological innovations throughout history. These discoveries and inventions have revolutionized how customers experience shopping and how retailers understand consumer behavior. This trivia question explores a significant milestone in retail history that fundamentally changed customer experience and shopping patterns worldwide. Test your knowledge of retail innovation history!

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Universal Product Code (UPC) barcode scanning system
Electronic point-of-sale (EPOS) touchscreen terminals
RFID (Radio-Frequency Identification) inventory tracking
Self-checkout kiosk technology