Which innovative retail authentication method was first widely adopted for high-value WWII military memorabilia in 2015?

Throughout history, military artifacts have become valuable collectibles, creating a unique retail market. From vintage uniforms to decommissioned equipment, the business of military memorabilia combines history with consumer demand. This poll explores a fascinating aspect of how military history products are marketed and authenticated in today's retail landscape, highlighting the intersection of historical preservation and modern retail trends.

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Blockchain-based certificates of authenticity with tamper-proof digital provenance records
DNA marking technology using synthetic DNA sequences embedded in the item
Radio-frequency holographic tags with 3D microscopic verification patterns
Quantum dot identification systems with unique spectral signatures