Which military-developed technology was originally created for battlefield communications but later revolutionized retail inventory management worldwide?

Throughout history, military technology and supply chain innovations have dramatically influenced civilian retail. From WWII's logistics systems that transformed inventory management to military-developed technologies like the internet that revolutionized e-commerce, the connection between military advancements and retail evolution is fascinating. This poll tests your knowledge about how military product design and supply chain methods have shaped modern retail experiences we take for granted today.

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RFID (Radio-Frequency Identification) technology, first used to identify friendly aircraft in WWII before becoming essential for modern retail inventory tracking
GPS navigation systems, originally developed for guiding nuclear missiles before being adapted for retail delivery logistics
Bluetooth technology, first created for secure naval communications before becoming standard in retail point-of-sale systems
QR codes, developed by the U.S. Army for equipment identification before being adopted for retail marketing and payments