Biomimetic microfingerprints for anti-counterfeiting strategies

Hyung Jong Bae; Sangwook Bae; Cheolheon Park; Sangkwon Han; Junhoi Kim; Lily Nari Kim; Kibeom Kim; Suk-Heung Song; Wook Park; Sunghoon Kwon

doi:10.1002/adma.201405483

Biomimetic microfingerprints for anti-counterfeiting strategies

Adv Mater. 2015 Mar 25;27(12):2083-9. doi: 10.1002/adma.201405483. Epub 2015 Feb 6.

Authors

Hyung Jong Bae¹, Sangwook Bae, Cheolheon Park, Sangkwon Han, Junhoi Kim, Lily Nari Kim, Kibeom Kim, Suk-Heung Song, Wook Park, Sunghoon Kwon

Affiliation

¹ Department of Electrical and Computer Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 151-744, South Korea; Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 151-744, South Korea; Institute of Entrepreneurial Bio Convergence, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 151-744, South Korea.

PMID: 25656227
DOI: 10.1002/adma.201405483

Abstract

An unclonable, fingerprint-mimicking anti-counterfeiting strategy is presented that encrypts polymeric particles with randomly generated silica film wrinkles. The generated wrinkle codes are as highly unique as human fingerprints and are technically irreproducible. Superior to previous physical unclonable functions, codes are tunable on demand and generable on various geometries. Reliable authentication of real-world products that have these microfingerprints is demonstrated using optical decoding methods.

Keywords: anti-counterfeiting; biomimetics; configurable taggants; microfingerprints; unclonable taggants.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biomimetics / methods*
Dermatoglyphics*
Fraud / prevention & control*
Humans
Mechanical Phenomena
Microspheres
Silicon Dioxide

Substances

Silicon Dioxide