Which technology first revolutionized retail inventory management in the 1970s, leading to the widespread adoption of automated product tracking?

Before modern inventory management systems revolutionized retail, merchants relied on manual methods that were time-consuming and error-prone. The technological evolution of inventory tracking represents a fascinating intersection of commerce and innovation that transformed how businesses operate. This trivia question explores a pivotal moment in retail history that set the foundation for today's sophisticated inventory management solutions.

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Universal Product Code (UPC) barcode scanning
Punch card inventory systems
RFID (Radio-Frequency Identification) tags
Electronic Data Interchange (EDI)