Which retail innovation dramatically changed the military collectibles market in the early 2000s?

During wartime, military surplus stores emerged as specialized retail outlets for both practical and collectible items. After major conflicts, these stores became crucial in repurposing excess military equipment and giving civilians access to military-grade products. Today, they've evolved into sophisticated retail chains catering to military history enthusiasts, collectors, and practical users alike. This poll tests your knowledge about the retail landscape of military collectibles and memorabilia.

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Online authentication services that verified the provenance of World War II artifacts
Holographic display cases for museum-quality presentation of military medals
RFID tagging of Civil War battlefield excavated items
3D printing replicas of rare military insignia and badges