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Versatile and Validated Optical Authentication System Based on Physical Unclonable Functions.

Riikka Arppe-Tabbara1, Mohammad Tabbara1, Thomas Just Sørensen1

  • 1Nano-Science Center and Department of Chemistry , University of Copenhagen , Universitetsparken 5 , 2100 København Ø , Denmark.

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PubMed
Summary
This summary is machine-generated.

A novel optical authentication system uses physical unclonable functions (PUFs) to combat counterfeit products. This system, utilizing unique PUF-tags and smartphone readers, offers a secure and cost-effective solution against product counterfeiting.

Keywords:
anti-counterfeiting inkanti-counterfeiting systemanti-counterfeiting tagslanthanide luminescenceluminescent tagsoptical authenticationphysical unclonable functions

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Area of Science:

  • Materials Science
  • Optics
  • Security Technology

Background:

  • Counterfeit goods pose significant economic, security, and health risks.
  • Current anti-counterfeiting measures often lack robust, unclonable features.
  • Need for advanced authentication methods to verify product authenticity.

Purpose of the Study:

  • To develop an optical authentication system leveraging physical unclonable functions (PUFs).
  • To create unique, unclonable PUF-tags for product authentication.
  • To validate the system's effectiveness and scalability.

Main Methods:

  • Exploited stochastic processes to generate inherent randomness for PUF-tags.
  • Developed PUF-tags using commercial printing with various carrier and taggant materials.
  • Demonstrated PUF-tags based on scattering, absorption, and luminescence.
  • Validated a scattering-based PUF-tag system with a smartphone reader.

Main Results:

  • Achieved zero false positives in over 29,000 matches across 9,720 unique codes.
  • Demonstrated a high encoding capacity of 2.5 x 10^120.
  • Confirmed the system's independence from contrast generation methods.
  • Showcased low manufacturing costs for PUF-tags.

Conclusions:

  • The developed optical authentication system based on PUF-tags is highly effective against counterfeits.
  • Scattering-based PUF-tags combined with smartphone readers offer a practical and scalable solution.
  • This technology has strong potential to mitigate the global problem of counterfeit products.