KAIST develops nano-fingerprint tech for anti-counterfeiting
Researchers create unique, hard-to-replicate nanostructures for product authentication using light.
A team of researchers from the Korea Advanced Institute of Science and Technology (KAIST) has developed a novel security technology that uses unique artificial fingerprints made from randomly assembled nanoparticles. These microscopic patterns, formed by spherical particles hundreds of nanometers in size, are nearly impossible to replicate and can be authenticated using simple tools like a smartphone flashlight or a laser pointer.
The technology, published in the journal Nature Communications, leverages the natural variations that occur during the self-assembly of nanoparticles on a water surface. These variations create distinct optical signals when illuminated, offering a secure and convenient method for product authentication. Unlike traditional physical unclonable functions (PUFs), which require expensive equipment, this method uses widely available light sources for verification.
The research team demonstrated that the nanostructures can be transferred to various surfaces, including flexible plastics, metals, and transparent films. This versatility opens up potential applications in anti-counterfeiting for luxury goods, pharmaceuticals, and electronic devices. The technology could also be used to create security labels that do not interfere with a product's design.
This innovation advances the field of additive manufacturing and security by introducing a low-cost, high-security authentication method. By using self-assembled nanoparticles and simple optical tools, the technology bridges the gap between complex PUFs and everyday usability, offering a scalable solution for product verification and anti-counterfeiting.
Edited by the news editor with AI from the original report — please refer to the original source.