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Proceedings Paper

Waveguide-based machine readable fluorescence security feature for border control and security applications
Author(s): Jincy Johny; Kaushal Bhavsar; Simon Officer; Morgan Adams; Radhakrishna Prabhu
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Paper Abstract

Border security challenges and immigration issues are increasing considerably in recent years. Counterfeiting and fraudulent use of identity and other travel documents are posing serious threats and safety concerns worldwide, ever since the advancement of computers, photocopiers, printers and scanners. Considering the current scenario of illegal migration and terrorism across the world, advanced technologies and improved security features are essential to enhance border security and to enable smooth transits. In this paper, we present a novel dual waveguide based invisible fluorescence security feature and a simple validation system to elevate and strengthen the security at border controls. The validation system consists of an LED (light emitting diode) as excitation source and an array photodetector which helps in the simultaneous detection of multiple features from the fluorescence waveguides. The fluorescence waveguides can be embedded into the identity document as micro-threads or tags which are invisible to the naked eye and are only machine readable. In order to improve the sensitivity, rare earth fluorescence materials are used which absorb only specific ultraviolet (UV) or visible (VIS) wavelengths to create corresponding fluorescent emission lines in the visible or infrared wavelengths. Herein, we present the preliminary results based on the fluorescence spectroscopic studies carried out on the fabricated rare earth doped waveguides. The effect of different rare earth concentrations and excitation wavelengths on the fluorescence intensity were investigated.

Paper Details

Date Published: 8 October 2018
PDF: 9 pages
Proc. SPIE 10802, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies II, 1080209 (8 October 2018); doi: 10.1117/12.2501974
Show Author Affiliations
Jincy Johny, The Robert Gordon Univ. (United Kingdom)
Kaushal Bhavsar, The Robert Gordon Univ. (United Kingdom)
Simon Officer, The Robert Gordon Univ. (United Kingdom)
Morgan Adams, The Robert Gordon Univ. (United Kingdom)
Radhakrishna Prabhu, The Robert Gordon Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 10802:
Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies II
Henri Bouma; Radhakrishna Prabhu; Robert James Stokes; Yitzhak Yitzhaky, Editor(s)

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