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Publication numberWO2002093456 A3
Publication typeApplication
Application numberPCT/US2002/014361
Publication date27 May 2004
Filing date7 May 2002
Priority date10 May 2001
Also published asCA2446814A1, CA2446814C, CN1636225A, CN100338616C, EP1444636A2, EP1444636A4, US7536553, US7966267, US20030005303, US20100117350, WO2002093456A2
Publication numberPCT/2002/14361, PCT/US/2/014361, PCT/US/2/14361, PCT/US/2002/014361, PCT/US/2002/14361, PCT/US2/014361, PCT/US2/14361, PCT/US2002/014361, PCT/US2002/14361, PCT/US2002014361, PCT/US200214361, PCT/US2014361, PCT/US214361, WO 02093456 A3, WO 02093456A3, WO 2002/093456 A3, WO 2002093456 A3, WO 2002093456A3, WO-A3-02093456, WO-A3-2002093456, WO02093456 A3, WO02093456A3, WO2002/093456A3, WO2002093456 A3, WO2002093456A3
InventorsJudith D Auslander, Robert A Cordery, Claude Zeller
ApplicantPitney Bowes Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Method and system for validating a security marking
WO 2002093456 A3
Abstract
A method and system for authenticating an item by using a security marking. (12) The security marking (12) is provided on the item with an OVD ink capable of absorbing light in a visible wavelength range to appear visibly black and producing a red fluorescent emission under ultraviolet excitation. Under visible light illumination and ultraviolet excitation, a visible image (24) and a fluorescent image (22) are obtained from the security marking using image scanners (80). The images are compared to find a substantial match with each other. The security marking can be a postage indicium (12), a barcode (38), a symbol, a message or an image.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US6271946 *29 Dec 19997 Aug 2001Telcordia Technologies, Inc.Optical layer survivability and security system using optical label switching and high-speed optical header generation and detection
Non-Patent Citations
Reference
1 *See also references of EP1444636A4
Classifications
International ClassificationB42D15/10, G06K7/12, G06K19/14, G06T7/00, B41J29/00, B41J2/01, G07D7/06, G06T1/00
Cooperative ClassificationG06K7/12, B41M3/144, G06K19/14
European ClassificationB41M3/14F, G06K19/14, G06K7/12
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