A SECURITY DOCUMENT CIRCUIT

The authenticity of a security document, such as a bank note, is verified by use of a security feature arranged in or on the document, which security feature comprises an antenna arranged to receive EM-radiation from an external energy source; a rectifier arranged to receive electric energy from the...

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Bibliographic Details
Main Authors WANG, XIN, MALMSTRÖM, ANNA, HENNERDAL, LARS-OLOV, SNELLING, JAMES PETER, NORBERG, PETRONELLA, COOPER, PHILIP GEORGE, ROBERTSSON, MATS, NORDLINDER, STAFFAN
Format Patent
LanguageEnglish
French
German
Published 23.12.2015
Subjects
CHECKING-DEVICES
HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING
PHYSICS
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Summary:The authenticity of a security document, such as a bank note, is verified by use of a security feature arranged in or on the document, which security feature comprises an antenna arranged to receive EM-radiation from an external energy source; a rectifier arranged to receive electric energy from the antenna and convert it into a rectified current; and an electrochromic display arranged to alter its electrochromic state in response to said rectified current. Hence, a security feature able alter its appearance in response to EM-radiation is provided, which comprises a display that can be given a large variety of two dimensional shapes.
Bibliography:Application Number: EP20080759400