Which retail technology innovation was first widely implemented in U.S. military exchanges (PX/BX) during the 1990s, revolutionizing inventory management for deployed forces?

Post Exchange (PX) and Base Exchange (BX) stores have been vital to military life for over a century. These retail operations have evolved significantly, incorporating cutting-edge retail technologies and innovations to serve military personnel worldwide. This trivia question explores how modern retail technology transformed military shopping facilities during a critical period of innovation.

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RFID inventory tracking systems
Portable barcode scanning with satellite uplink capability
Touchscreen self-checkout kiosks
Digital loyalty card programs