Which retail technology was first successfully implemented on commercial airlines in 1992, creating a new shopping experience for travelers?

The transportation industry has witnessed remarkable technological advancements in its retail experience. From ticket purchasing to in-transit shopping, the way consumers interact with transportation retail has evolved dramatically. This trivia question focuses on a pivotal retail technology that revolutionized how passengers shop while traveling. Test your knowledge about the intersection of transportation and retail innovation!

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In-flight duty-free digital catalogs with credit card processing
Self-service airport retail kiosks
RFID-tagged travel merchandise
Augmented reality train station shopping guides