Which invention, first implemented commercially in 1974 at an Ohio supermarket, revolutionized retail supply chain management by enabling automated product tracking?

The retail supply chain has undergone remarkable transformations throughout history. Major innovations in inventory tracking, distribution, and logistics have revolutionized how products move from manufacturers to consumers. This poll tests your knowledge about a pivotal invention that fundamentally changed retail supply chain management and created the foundation for today's global commerce systems.

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The Universal Product Code (UPC) barcode system
The Electronic Data Interchange (EDI) protocol
The Radio-Frequency Identification (RFID) tag
The Just-In-Time (JIT) inventory management system