Which retail technology innovation was first widely adopted by military exchanges (PX/BX) in the 1970s, decades before becoming standard in civilian retail?

Military exchanges (PX/BX) have evolved significantly over centuries to serve armed forces personnel. These retail operations have unique business models that combine military discipline with retail innovation. From basic necessities in field camps to modern shopping complexes on bases worldwide, military retail has developed distinctive approaches to customer experience, logistics, and technology. Test your knowledge about a groundbreaking retail technology first widely implemented in military exchanges.

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Barcode scanning and computerized inventory management
Self-checkout kiosks
Online ordering with base delivery
RFID product tracking