Which retail technology innovation from the 1970s fundamentally transformed inventory management and is considered the predecessor to modern e-commerce systems?

The evolution of retail technology has transformed how we shop throughout history. From primitive markets to digital commerce, certain innovations stood out as revolutionary turning points. This trivia question focuses on one such pivotal moment in retail history that forever changed consumer behavior and set the foundation for modern shopping experiences. Test your knowledge about the origins of one of retail's most fundamental technologies!

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Universal Product Code (UPC) barcode scanning
Electronic cash registers with digital displays
RFID inventory tracking tags
Computerized credit card processing terminals