Which military-developed technology from WWII directly led to the creation of modern retail barcode scanning and electronic payment systems?

The retail landscape we know today was significantly influenced by military logistics, supply chains, and technological innovations developed during major conflicts. From WWII inventory systems that evolved into modern retail management to military-developed technologies that transformed payment processing, the connection between military history and retail evolution is fascinating. Test your knowledge about how wartime necessities and military innovations revolutionized the retail experience we take for granted today.

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RADAR (Radio Detection and Ranging) technology, which evolved into electronic article surveillance systems
IFF (Identification Friend or Foe) transponder systems, which inspired RFID technology used in retail inventory
Enigma code-breaking computers, which became the first point-of-sale systems in the 1950s
Military ration distribution systems, which were directly adapted into the first supermarket checkout processes