Which retail technology innovation, first widely implemented in 1974, revolutionized inventory management and is considered the precursor to modern e-commerce systems?

Throughout history, retail technology has transformed how we shop and how merchants operate. From early cash registers to modern AI systems, each innovation has reshaped commerce. This trivia question focuses on a pivotal moment in retail technology history that fundamentally changed inventory management and shopping experiences worldwide. Test your knowledge of how technology revolutionized retail operations in the 20th century!

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The Universal Product Code (UPC) barcode system
Electronic Data Interchange (EDI) networks
Point-of-Sale (POS) computerized terminals
Radio Frequency Identification (RFID) tags