Security display devices, their production and use

Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a...

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Bibliographische Detailangaben
Hauptverfasser:	MacPherson, Charles Douglas, Garanzotis, Theodoros
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BOOK COVERS BOOKBINDING CHECKING-DEVICES CRYPTOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DISPLAY DISPLAYING EDUCATION FILES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING LABELS OR NAME-PLATES LOOSE LEAVES MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES MOVABLE-STRIP WRITING OR READING APPARATUS NANOTECHNOLOGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS 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 SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TRANSPORTING
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Beschreibung
Zusammenfassung:	Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a legitimate or counterfeit copy.