Title: Security authentication using phase-encoded nanoparticle structures and polarized light
Authors: Carnicer, Artur
Hassanfiroozi, Amir
Latorre-Carmona, Pedro
Huang, Yi-Pai
Javidi, Bahram
Department of Photonics
Issue Date: 15-Jan-2015
Abstract: Phase-encoded nanostructures such as quick response (QR) codes made of metallic nanoparticles are suggested to be used in security and authentication applications. We present a polarimetric optical method able to authenticate random phase-encoded QR codes. The system is illuminated using polarized light, and the QR code is encoded using a phase-only random mask. Using classification algorithms, it is possible to validate the QR code from the examination of the polarimetric signature of the speckle pattern. We used Kolmogorov-Smirnov statistical test and Support Vector Machine algorithms to authenticate the phase-encoded QR codes using polarimetric signatures. (C) 2015 Optical Society of America
URI: http://dx.doi.org/10.1364/OL.40.000135
ISSN: 0146-9592
DOI: 10.1364/OL.40.000135
Volume: 40
Begin Page: 135
End Page: 138
Appears in Collections:Articles