Which retail innovation was first introduced at the Pentagon shopping center in the 1970s that revolutionized how military personnel purchased goods?

The Pentagon isn't just the headquarters of the U.S. Department of Defense—it's also home to one of the most unique retail environments in the military world. This trivia question explores how retail innovation intersects with military history, showcasing how shopping centers within military installations have evolved to serve personnel. Test your knowledge about this fascinating aspect of military retail history!

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The first military-exclusive credit card system (MilPay)
Electronic point-of-sale terminals with military ID integration
Self-service commissary shopping (replacing clerk-service model)
Computerized inventory management for military uniforms