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Random laser ablated tags for anticounterfeiting purposes and towards physically unclonable functions
Srinivas Gandla1, Jinsik Yoon2, Cheol-Woong Yang3
1Multifunctional Nano Bio Electronics Lab, Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Cheoncheon-dong, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
Nature Communications
|August 31, 2024
Summary
A new laser ablation technique creates unique, randomly patterned anticounterfeiting tags rapidly and affordably. These tags offer robust security with high encoding capacity and low error rates for product authentication.
Area of Science:
- Materials Science
- Optics
- Engineering
Background:
- Counterfeiting poses a significant economic threat, necessitating advanced anticounterfeiting solutions.
- Existing anticounterfeiting tags often face limitations in production speed, cost, and authentication ease.
- There is a demand for economical, rapidly produced, and easily verifiable anticounterfeiting tags.
Purpose of the Study:
- To introduce a novel, universal laser ablation technique for generating anticounterfeiting tags.
- To demonstrate the ultrafast, mass-producible, and automatable nature of the proposed tag generation method.
- To validate the security and authenticity features of the laser-ablated tags.
Main Methods:
- Utilized a nanosecond pulsed infrared laser to ablate laser-sensitive materials, creating intrinsic, randomly distributed craters.
- Optimized laser and scanning parameters to achieve high randomness in tag patterns.
- Employed pattern recognition algorithms and statistical NIST tests to analyze tag randomness and performance.
Main Results:
- Generated anticounterfeiting tags with intrinsic, randomly distributed craters in under one second.
- Achieved high randomness in tag patterns, validated by pattern recognition and statistical analysis.
- Demonstrated exceptional encoding capacity (approx. 10^391 for single tags) and extremely low false rates (10^-58).
Conclusions:
- The laser ablation technique offers a practical, economical, and ultrafast solution for anticounterfeiting tag generation.
- The generated tags exhibit high security due to their inherent randomness and robust authentication capabilities.
- This method enables straightforward product processing with minimal fabrication costs and high mass-producibility.
