EP2293257A1 - Système de vérification d'un document - Google Patents

Système de vérification d'un document Download PDF

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Publication number
EP2293257A1
EP2293257A1 EP09169671A EP09169671A EP2293257A1 EP 2293257 A1 EP2293257 A1 EP 2293257A1 EP 09169671 A EP09169671 A EP 09169671A EP 09169671 A EP09169671 A EP 09169671A EP 2293257 A1 EP2293257 A1 EP 2293257A1
Authority
EP
European Patent Office
Prior art keywords
transponder
optical display
state
document
verification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09169671A
Other languages
German (de)
English (en)
Inventor
Franz Amtmann
Thomas Wille
Hauke Meyn
Mathias Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NXP BV
Original Assignee
NXP BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NXP BV filed Critical NXP BV
Priority to EP09169671A priority Critical patent/EP2293257A1/fr
Publication of EP2293257A1 publication Critical patent/EP2293257A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/01—Testing electronic circuits therein

Definitions

  • the invention relates to a system for a verification of a document, in particular a system comprising a transponder generating a verification signal to change a state of an optical display.
  • the invention relates a method of verifying a document.
  • Documents comprise verification features to secure validity when being exchanged or being proofed. These verification features include e.g. on banknotes paper quality, print quality, holographic strips, microlettering, metallic threads, watermarks and other security strips.
  • a system for verification or authentication of a document comprising a transponder positionable or placeable on the document, an optical display, in particular a device that presents information in visual form positionable, placeable or attachable on the document, wherein the transponder is adapted to generate, create or produce a verification signal, and wherein the verification signal is adapted to change, alter, modify or vary a state, in particular a condition, a mode or a status of the optical display.
  • the verification signal may be indicative for the authenticity of the document.
  • system may particularly denote a whole made up of diverse but related parts or items.
  • system may particularly denote an arrangement or an aggregation of item or elements.
  • the term "verification” may particularly denote a process of attesting the authenticity, genuineness or validity of something. Something may be verified, validated or authenticated by a process of verification.
  • document may particularly denote something that serves as evidence.
  • document may denote a tangible medium or a subject matter that serves as evidence.
  • Examples for documents may be banknotes, official papers, ID cards, share certificates, credit cards, bank cards, money cards, contract documents et cetera.
  • Documents may be made of diverse materials, like paper, plastic et cetera.
  • transponder may be literally a combination of a “transmitter” and a “responder” and may particularly denote a device receiving and/or transmitting electromagnetic waves and/or optic waves that upon receiving a designated signal emits an electromagnetic signal of its own and that may be used especially for the detection, identification, and location of objects.
  • Examples for a transponder may be an RFID-tag and a contactless chip card.
  • positionable may particularly denote that something may be put on, fixed to or embedded in something else.
  • the transponder may be embedded in paper or a plastic card.
  • the optical display may be fixed on paper or a plastic card.
  • a verification signal may particularly denote that an electrical or an electromagnetic signal or sign is produced.
  • a voltage signal may be produced by the transponder in order to modify the optical display.
  • a digital signal may be produced by the transponder.
  • change a state of the optical display may particularly denote that the visual appearance of the device may alter which presents visual information. For example the colour may become different or the device may change from bright to dark, from transparent to opaque, or vice versa.
  • written information may be visible on the optical display.
  • the written information that is displayed may be an information about the validity of the document, like "valid", “non valid” et cetera.
  • a method of verifying a document comprises:
  • a gist of an exemplary aspect may particularly be seen in a system which may enable a secure usage of documents.
  • the documents may be provided with a transponder and an optical display coupled with the transponder.
  • the transponder may be adapted to send out an electronic signal to the optical display, which electronic signal may be particularly an electrical or electromagnetic signal, or more particularly a voltage signal or a digital signal.
  • the signal may initiate the optical display to show a visible verification signal. In this sense, the signal send out by the transponder may be called a "verification signal".
  • the state of the optical display may depict information which may indicate the truth of the document as well as a state of the document wherein the document is disabled or not valid.
  • the transponder technology for example the RFID-tag or a contactless chip, together with the reactive optical display may be too difficult to be counterfeited.
  • the status of the document may be indicated easily by the optical display on the document.
  • the combination of a difficult forgery and a clear, apparent and evident optical display may provide an effective verification proof for the combination of a transponder technology and an optical display coupled to the transponder technology.
  • transponder and the optical display may be associated with the document and/or may be embedded into the document.
  • the transponder and the optical display may be integrated parts of the document.
  • the transponder and/or the optical display coupled to the transponder may be difficult to be counterfeited.
  • a gist of an exemplary method of verifying a document may comprise that a transponder sends out a verification signal to an optical display in order to change the state of the optical display.
  • a transponder sends out a verification signal to an optical display in order to change the state of the optical display.
  • Such a method may be advantageous because a complicated technology may be coupled to evident optical information, because counterfeiting may be difficult on the one hand.
  • the proof of the validity when using and exchanging the documents may be easy on the other hand.
  • the transponder may be adapted to supply the optical display with activation energy for changing the state of the optical display.
  • the transponder may be electrically driven and may be coupled to the optical display.
  • the transponder may send the verification signal to the optical display.
  • the transponder may be coupled with the optical display to supply the optical display with energy which may be needed to activate the change of the optical display.
  • the transponder may supply the optical display with information, such as digital information, as well as with electrical energy to enable the optical display to change its state. This may be advantageous because no extra electrical power supply for the optical display may be required.
  • the transponder may be adapted to generate the verification signal in response to a received interrogation signal of a reader.
  • the reader may send an interrogation signal or request to the transponder.
  • the transponder may send the verification signal to the optical display.
  • the requirements to initialize the transponder to generate the verification signal may vary: A simple and non-encrypted signal may be sent by the reader to the transponder.
  • the security of the verification system may be based on the difficulty of copying the transponder technology and/or the display technology and/or the difficulty to couple the transponder technology with the display technology and/or to integrate them on or into the tangible document.
  • the security of the verification system may be enhanced by sending encrypted signals.
  • the security of the verification system may additionally be based on the type of encrypted signals exchanged by the transponder and the reader, e.g. the interrogation signal of the receiver may be encrypted according to asymmetric or symmetric encryption schemes.
  • the system may further comprise a reader adapted to supply the transponder at least with an amount of energy which may be sufficient for changing the state of the optical display.
  • the transponder may be a passive transponder which is supplied with energy by electromagnetic signals and electromagnetic energy from the reader. The exchange of electrical signals and electrical energy between the reader and the transponder may be contactless and the transponder may be driven by the energy supplied by the reader.
  • activation energy may be required which activation energy may be supplied by the transponder to which the optical display is coupled.
  • the amount of energy which is induced into the transponder by the reader may at least be sufficient to supply the optical display with the amount of energy for changing the state of the optical display.
  • the energy per time instant is not sufficient for supplying the optical display energy may be accumulated over a time period in the transponder. Additionally or alternatively, the distant between the reader and the transponder may be selected in such a way that the energy per time instant is sufficient.
  • the transponder may further comprise a crypto chip which is adapted to generate the verification signal.
  • the crypto chip may be a chip which is adapted to receive encrypted, ciphered or encoded electronic signals which are send out by the reader, further to process the encoded signals and furthermore to give out an appropriate response in the form of a electronic signal response based upon an algorithm operated on the received signal.
  • the algorithm performed by the crypto chip may be secret and the crypto chip may be adapted to keep the secret encryption algorithm.
  • the crypto chip may be adapted to perform a secure or encrypted communication with a reader.
  • secure or encrypted communication may particularly denote encipherment of digital data.
  • encryption or data encryption may be described as a process of disguising information as "ciphertext", or data unintelligible to an unauthorized person.
  • decryption, or decipherment is the process of converting ciphertext back into its original format.
  • the crypto chip may allow for a secured communication with the reader by encrypting digital data to be sent to the reader and by decrypt digital data received from the reader.
  • the secure or encrypted communication between the crypto chip and the reader may be based on a key encryption.
  • the reader or a processor of the reader may encrypt data by applying an algorithm-i.e., a set of procedures or instructions for performing a specified task-to a block of data.
  • a personal encryption key, or password known only to the transmitter of the message and its intended receiver, is used to control the algorithm's encryption of the data, thus yielding unique ciphertext that may be decrypted only by using the key.
  • the state of the optical display may indicate an enabling state or a disabling state.
  • the disabling state may indicate a state in which the verification is temporarily or permanently disabled.
  • the disabling state may in particularly be useful if a document, e.g. banknotes, are transported or are stored and may be withdrawn for a period of time.
  • a special reader may be adapted to apply a secret key and may be used to disable the document.
  • a special reader and a secret key may be used to change the status of the optical display to the enabling state.
  • a first group of readers may be adapted to make a query wherein the response of the transponder may express validity for the enabling state indicated by the optical display on the document.
  • the first group of readers may be adapted to make a query wherein the response of the transponder may express no validity for the disabling state indicated by the optical display of the document.
  • a second group of readers may be adapted to change the state of the document from the enabling state to the disabling state and from the disabling state to the enabling state by applying a secret key, for example, only used by and accessible to banks or authorized persons and organisations.
  • the amount of energy to change the state of the document between the enabling state and the disabling state may be of a higher value than the amount of energy to change the state of the optical display.
  • the change of the state of the optical display may be based on a polarisation effect.
  • a polarisation effect may change the depiction on an optical display.
  • Polarized light may be produced by absorption, reflection, scattering or birefringence of non polarized light.
  • An LCD-technology liquid crystal display
  • the state of the liquid crystals may be changed by applying an electrical potential or voltage measured in V (Volt).
  • the change the state of the optical display may be based on a colour effect.
  • An electro-optical effect may change the colour of the display when a change of absorption or a change of a refractive index is dependent on an applied electrical field.
  • the change of the state of the optical display may be based upon a change of an electrical property. Due to the coupling of the transponder to the optical display the change of the state of the optical display may be induced by the verification signal transmitted by the transponder and supported by electrical energy supplied by the transponder.
  • Figure 1 shows a document 2 comprising a transponder 4 and an optical display 6.
  • the transponder 4 may comprise an antenna 8 and an RFID-chip 6. Further, the transponder may comprise a crypto chip 14.
  • the optical display 10 may be adapted to show an optical signal 12.
  • the transponder 4 and the optical display 10 may be coupled by a wiring connection 16.
  • a method for verification of a signal may comprise the following steps:
  • an interrogation signal which may be encrypted or clear text
  • a transponder e.g. an RFID-tag
  • the interrogation signal may be generated by a reader or reader unit, wherein the transponder is associated to a specific document.
  • Performing a verification procedure in the transponder e.g. by a processor implemented in the transponder.
  • Changing the state of a display of the display unit in response to receiving the verification signal For example, a colour of the display unit may change or some predetermined indicia may be displayed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
EP09169671A 2009-09-07 2009-09-07 Système de vérification d'un document Withdrawn EP2293257A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09169671A EP2293257A1 (fr) 2009-09-07 2009-09-07 Système de vérification d'un document

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09169671A EP2293257A1 (fr) 2009-09-07 2009-09-07 Système de vérification d'un document

Publications (1)

Publication Number Publication Date
EP2293257A1 true EP2293257A1 (fr) 2011-03-09

Family

ID=41404400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09169671A Withdrawn EP2293257A1 (fr) 2009-09-07 2009-09-07 Système de vérification d'un document

Country Status (1)

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EP (1) EP2293257A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015934A1 (de) * 2007-04-02 2008-10-09 Bundesdruckerei Gmbh Dokument mit einem Sicherheitsmerkmal, Lesegerät und Verfahren zum Lesen eines Sicherheitsmerkmals
EP1988514A1 (fr) * 2007-05-04 2008-11-05 Acreo AB Circuit de document de sécurité
DE102007050480A1 (de) * 2007-10-19 2009-04-23 Bundesdruckerei Gmbh Dokument mit einer Anzeigevorrichtung, Lesegerät für ein Dokument und Verfahren zum Lesen eines Dokuments

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015934A1 (de) * 2007-04-02 2008-10-09 Bundesdruckerei Gmbh Dokument mit einem Sicherheitsmerkmal, Lesegerät und Verfahren zum Lesen eines Sicherheitsmerkmals
EP1988514A1 (fr) * 2007-05-04 2008-11-05 Acreo AB Circuit de document de sécurité
DE102007050480A1 (de) * 2007-10-19 2009-04-23 Bundesdruckerei Gmbh Dokument mit einer Anzeigevorrichtung, Lesegerät für ein Dokument und Verfahren zum Lesen eines Dokuments

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