Which innovative retail payment system was first widely deployed in military PX facilities during Operation Iraqi Freedom (2003) to reduce the dangers of cash handling in combat zones?

Military Post Exchanges (PX) have evolved significantly throughout history, adopting retail technologies to serve military personnel worldwide. From basic commissaries to modern shopping complexes, these unique retail environments blend military necessity with civilian shopping experiences. This trivia explores a groundbreaking retail technology implementation that changed how military personnel shop while deployed.

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Eagle Cash Card - A stored-value smart card that eliminated the need for physical currency in combat zones
Military PayPal Portal - An online payment system requiring satellite authentication
Combat Zone Crypto - A battlefield-specific cryptocurrency using secure military networks
AAFES Digital Wallet - A biometric payment system using military ID verification