Which innovative retail technology was FIRST widely implemented in military exchanges (PX/BX) before becoming common in civilian retail?

Military Post Exchanges (PX) and Base Exchanges (BX) have evolved significantly since their inception, becoming sophisticated retail operations that serve military personnel worldwide. This poll explores how military retail has transformed through digital innovation to meet the unique needs of service members and their families, while maintaining their special status as tax-free shopping destinations that help fund morale, welfare, and recreation programs on military installations.

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Self-checkout kiosks with military ID verification
RFID inventory tracking for military-specific merchandise
Barcode scanning systems for retail inventory management
Deployment zone-specific mobile shopping applications