Document Authentication Using Security Ink and Chemical Reactant

A method and system of document authentication comprise applying a neutralizer security ink to a paper document to be authenticated, the neutralizer security ink neutralizing a reactant in the paper document. A color changing security ink is applied to the paper document to be authenticated at least...

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Bibliographische Detailangaben
Hauptverfasser:	DOMANSKI JOANN, SELAH RICHARD J
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BOOK COVERS BOOKBINDING CRYPTOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DISPLAY DISPLAYING EDUCATION FILES LABELS OR NAME-PLATES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SEALS SIGNS SPECIAL PRINTED MATTER TRANSPORTING
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Beschreibung
Zusammenfassung:	A method and system of document authentication comprise applying a neutralizer security ink to a paper document to be authenticated, the neutralizer security ink neutralizing a reactant in the paper document. A color changing security ink is applied to the paper document to be authenticated at least to an area where the neutralizer security ink was applied, the color changing security ink having a first security color and a second security color. A test solution is applied to the paper document to be authenticated at least on the area where the neutralizer security ink and color changing security ink have both been applied. The application of the test solution to the area where the neutralizer security ink and color changing security ink have both been applied causes the color changing security ink to change from the first security color to the second security color.