Which retail technology innovation from the 1970s revolutionized inventory management and is considered the predecessor to modern supply chain tracking systems?

In retail history, technological innovations have transformed how businesses operate and customers shop. One particular advancement stands out as revolutionary, fundamentally changing inventory management forever. This poll tests your knowledge of pivotal moments in retail technology history that shaped modern commerce. Can you identify which technology truly revolutionized inventory tracking and supply chain management?

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Universal Product Code (UPC) barcode system
IBM's first digital point-of-sale system
Walmart's computerized distribution network
NCR's electronic cash register with inventory tracking