Which modern retail inventory management technology was directly adapted from a system originally developed for tracking military supplies during the Vietnam War?

Many retail innovations we take for granted today originated from military logistics and inventory management systems. During World War II and subsequent conflicts, military supply chains developed sophisticated methods to track equipment, predict demand, and optimize distribution—techniques that later revolutionized civilian retail. This poll tests your knowledge of how military inventory systems transformed into today's retail technology.

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RFID (Radio-Frequency Identification) tracking tags
Universal Product Code (UPC) barcode system
Just-in-time (JIT) inventory methodology
Electronic data interchange (EDI) protocols