New Reconfigurable Security Tags Improve Anti-Counterfeiting
Researchers developed a dynamic optical fingerprint that can be altered after production to enhance item security.
Updated on Oct. 29, 2026 in Materials Science
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Researchers in South Korea and the US have developed an optical physical unclonable function featuring a reconfigurable microscopic fingerprint. This research-stage development introduces four distinct innovations for anticounterfeiting technology.
Why it matters
By enabling a fingerprint that can be deliberately altered after production, this development addresses the static nature of traditional security identifiers. It suggests a shift toward dynamic, verifiable supply chain protection.
The system incorporates four innovations, including a material with reversible near-infrared photochromism and optical structures reproduced during packaging moulding. These mechanisms allow the physical fingerprint to change identity post-production.
The details
The technology relies on microscopic optical structures that are imprinted during the packaging moulding process, creating a unique, machine-readable identifier. To allow for reconfiguration, the team integrated near-infrared photochromism—a property where a material changes color or opacity when exposed to specific light wavelengths—and biological markers derived from pollen. This architecture creates a physical unclonable function that serves as a dynamic security tag rather than a static one.
Timeline
October 29, 2026: Researchers published the results of these anticounterfeiting developments.
The Tech Race
This development marks a departure from standard static physical unclonable functions that are fixed at the point of manufacture. By prioritizing reconfigurability, the research team is competing against established rigid security standards that cannot be updated after deployment.
This technology remains in the research phase and is not yet available in commercial consumer packaging. Future applications could provide manufacturers with a way to update security credentials on individual items without replacing the physical packaging.
The takeaway
This research provides a pathway toward dynamic security tags that can evolve post-production to combat sophisticated counterfeiting. Observers should track subsequent peer-reviewed performance benchmarks regarding the read-accuracy and long-term environmental stability of these reconfigurable markers.
Further reading
Explore more developments in Materials Science to understand the latest shifts in protective technologies.
Source note: This article includes information reported by Taxstampauthentication.
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