EP2199098A1 - Élément anti-contrefaçons pour document d'identification, procédé de fabrication d'un tel élément, et document d'identification sécurisé - Google Patents

Élément anti-contrefaçons pour document d'identification, procédé de fabrication d'un tel élément, et document d'identification sécurisé Download PDF

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Publication number
EP2199098A1
EP2199098A1 EP08305976A EP08305976A EP2199098A1 EP 2199098 A1 EP2199098 A1 EP 2199098A1 EP 08305976 A EP08305976 A EP 08305976A EP 08305976 A EP08305976 A EP 08305976A EP 2199098 A1 EP2199098 A1 EP 2199098A1
Authority
EP
European Patent Office
Prior art keywords
fragment
document
data
line
identification document
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Withdrawn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
EP08305976A
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German (de)
English (en)
Inventor
Jean-Luc Lesur
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.)
Thales DIS France SA
Original Assignee
Gemalto SA
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 Gemalto SA filed Critical Gemalto SA
Priority to EP08305976A priority Critical patent/EP2199098A1/fr
Priority to PCT/EP2009/067502 priority patent/WO2010070089A1/fr
Publication of EP2199098A1 publication Critical patent/EP2199098A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes

Definitions

  • This invention relates generally to identification documents and a method for making such identification documents. More particularly, this invention relates to an anti-counterfeiting element for such identification document and to a secure identification document that allows detecting a fraudulent modification of the existing personalization or a completely falsified document. The invention also relates to a method for making such anti-counterfeiting element.
  • Identification documents are associated with secure applications, such as for example driving licenses, identity cards, membership cards, badges or passes, passports, discount cards, banking cards, money cards, multi-application cards, and other papers of value; and security documents such as bank notes.
  • Such documents are widely used, they may comprise an electronic module or not. If they comprise an electronic module, they can function either with contact and/or without contacts depending on the application to which they are intended. They may take the shape of card or a booklet or something else.
  • Such identification documents are graphically personalized. Personalized information is personal data of the card's owner, i.e for example his photo, his name, his birth date, his social security number, his biometric information such as his fingerprint for example, a validity date, an identification number allocated to him etc... This personalized information is printed onto the surface of the document, or into one or more constitution layers of the document. Because of the value and importance associated with each of these data carriers, they are often the subject of unauthorized copying and alterations, and forgeries.
  • One of these security features consists in providing, into the document, an optically variable security element, which comprises at least two security markings. Said markings are decomposed and interleaved, to create a complex image that is printed into the document. Then, a filter is placed over this complex image, said filter being arranged so that it enables to visualize each marking at a respective particular angle by tilting the document.
  • Such filter can be made either with micro-lens or with printed parallel lines.
  • optically variable security elements are difficult to copy because impossible to scan, they may still be falsified. Indeed, an infringer can arrive to change the variable data viewed through the filter, or to remove the part of the document comprising the optically variable security feature and to replace it by another part comprising another falsified optically variable element.
  • a problem intended to be solved by the invention is to propose an anti-counterfeiting element for an identification document, said anti-counterfeiting element being able to reveal different sets of data or images superimposed onto a background when tilting the document, said anti-counterfeiting element being made with a more complex security, while keeping a simple manufacturing process, and being able to reveal the different sets of data or images with different darkness in comparison with the background.
  • the solution of the invention to this problem relates to the fact that said anti-counterfeiting element comprises two separate fragments, each of which comprising part of data/images to be revealed and part of the background, each fragment being provided on each side of said identification document and overlapping each other through the thickness of said identification document.
  • the invention relates also to a secure identification document comprising such an anti-counterfeiting element.
  • the invention relates also to a method for manufacturing such an anti-counterfeiting element for an identification document.
  • the method comprises the following steps :
  • ID identity
  • the invention is usable with any data carrier that includes, but is not limited to, a driving license, a badge or pass, a passport, a discount card, a membership card, a banking card, a credit card, a money card, a multi-application card, and other security documents and papers of value that are to be provided with information or data in such a way that they cannot be easily imitated by common means.
  • identification documents may take indifferently the shape of card, or booklet, or something else.
  • Figure 1 shows a cross-sectional view of an identification document 10 comprising an anti-counterfeiting element F1, F2.
  • This document may be made either by molding in one-piece, or by lamination or other conventional process for attaching together several layers.
  • the document comprises several layers 11, 12, 14, 15, 16, 17 attached together.
  • the layers can be made with polycarbonate. This material is very interesting because, when they are laminated, the layers are fused and form only one piece instead of collated layers that could be delaminated.
  • invention is not limited to this preferred embodiment, and layers made in other plastic material, such as PVC, ABS, PET etc;.. can also be used.
  • the layers can also be attached by other means such as glue for example.
  • upper layers 14 and 17, also called external layers or overlay layers are preferably transparent, in order to let information printed onto the body or lower layers to be seen from the outside.
  • Layers 15 and 16 can be at least translucent, and laser-sensitive or not.
  • Layer 11, which is the core of the body in the illustrated example can be either opaque, or semi opaque or at least translucent. If the core 11 is completely opaque, it is then necessary to provide a part 12 in said core, which has to be either semi-opaque or at least translucent. This part 12 is intended to be used for the anti-counterfeiting element.
  • the anti-counterfeiting element is divided into two fragments F1, F2, each of which being provided on one side , respectively S1, S2, of the document, and more particularly on both sides S1, S2 of the part 12.
  • the two fragments overlap each other.
  • the two fragments overlap each other.
  • different data are displayed by the two fragments, as illustrated by the references 21 to 24.
  • the first displayed image 21 corresponds only to the background, which is black in the example of figure 1 .
  • a first set of data 22 revealed consists in letters G and A which appear brighter than the background.
  • the set of data consisting in the two letters G and A appears darker, while another set of data consisting in numbers 1 to 6 appears to be brighter.
  • the first two letters G and A have almost disappeared, while the numbers 1 to 6 appear darker.
  • each fragment F1, F2 is viewed independently from each other, it can only display an image at least corresponding to a background and at the most corresponding to a grey image.
  • the revelation of different sets of data or images, when tilting the document, can only be viewed through the two fragments F1, F2 overlapping each other, through the thickness of the identification document 10 or at least the thickness of part 12.
  • the part 12, on which are provided the two fragments F1, F2 of the anti-counterfeiting element can be semi-opaque.
  • the two fragments F1, F2 can be viewed with the help of a backlight.
  • the thickness of the part 12, and also the thickness of the body 11, has to be adapted to the resolution of the lines of the fragments F1, F2, in order to have good result. That is why the thickness is preferred at least four times the width w of a line of a fragment.
  • the lines of the fragment and the width of line are illustrated in figure 3 , which is described in detail bellow.
  • This lower limit of the thickness is much more important when the part 12 is semi-opaque, because the two fragments have to be seen together, overlapping each other, in order to reveal the different sets of data or images without using huge angle of viewing.
  • the preferred maximum angle for viewing last information is less than 30°.
  • the two fragments F1, F2 are applied on both sides S1, S2 either by means of a conventional color or monochrome printing process, or by laser engraving if layers used are laser sensitive. They can be applied either on/into layers 15, 16 or onto each surface of part 12.
  • Figure 2 shows a succession of different images displayed when tilting such a document.
  • the background corresponds to the photograph of the owner of the document.
  • This photograph appears whatever the tilt angle is, and different sets of data or images are revealed superimposed onto the photograph, with more or less darkness compare to the background, depending on the different tilt angles.
  • image 25 displayed comprises the photograph onto which are superimposed letters G and A that appear brighter than the photograph, then at a second angle the displayed image 26 comprises only the photograph without any other data superimposed.
  • the image 27 displayed comprises the photograph of the owner on which are superimposed numbers 1 to 6 that appear darker than the photograph.
  • image 28 displayed comprises the photograph of the owner on which are superimposed first the letters G and A that appear darker than the photograph, and second the numbers 1 to 6 that appear brighter than the photograph.
  • Figure 3 shows an example of the successive lines used to build the first fragment F1 of the anti-counterfeiting element.
  • a first step of the process consists in subdividing each original pixel of information to be displayed into a matrix M of X x Y dots.
  • each matrix has a sufficient color density for rendering the same details of a picture. Consequently, matrix must enable to obtain a contrast and brightness compared to original picture.
  • each pixel of information is subdivided into a matrix of 2x2 dots, said matrix comprising for example two dark dots and two bright dots.
  • each pixel of the first line of the background for example, is subdivided into a matrix of dots. Then, it is possible to create a first line L1 of matrices of dots, which corresponds to the first line of pixels of the background, each matrix of dots being chosen randomly amongst the different possibilities, i.e. the six different possibilities M1 to M6 in the illustrated example of figure 3 .
  • each matrix of dots can also be chosen in a coded manner, in such a manner that its choice is linked to the personalization information of the owner of the document for example.
  • matrices of dots are organized in lines by means of an algorithm using the personalized variable such as name or surname for example.
  • the place of coded matrix element inside a fragment can either be fixed for all personalized documents or depend itself from the personalized variable. Then, during the authentication step, a similar algorithm can be used to read the coded matrices.
  • a second line L2 of the first fragment F1 is created by reversing the just preceding first line L1.
  • the first line L1 is called a "positive line” compare to the second line L2, which is called “negative” line.
  • the third line L3, positive, of the fragment F1 comprises matrices of dots corresponding to the following line of pixels of the background, i.e. the second line of the background, and the fourth line L4, negative, corresponds to the reversed line of the just preceding line L3.
  • each odd line, positive corresponds to successive lines of pixels of the background, and each even line, negative, is the corresponding reversed line of the just preceding odd line.
  • Each line has a width w corresponding to the size of the matrices.
  • the second fragment F2 intended to be applied on the other side S2 of the part 12 and opposite to the first one, is linked to the first fragment F1. Its building is illustrated by the example of figure 4 .
  • Data to be revealed onto the background are coded into lines of matrices of dots, by using each positive or negative line of the first fragment.
  • the code consists in dividing the line of matrices of dots into portions of predetermined variable size, each portion corresponding either to a portion of a corresponding odd line of the first fragment F1 or to a portion of a corresponding even line of the first fragment F1.
  • FIG 4 illustrates one example.
  • a first data to be revealed is coded in such a manner that the first line L1 of the second fragment F2 is divided into four portions P1 to P4 of different size.
  • Each portion P1 to P4 corresponds, either to the positive first line L1 of first fragment F1 or to the negative second line L2 of the first fragment F1.
  • the portions P1 and P3 correspond to first positive line L1 of first fragment F1
  • portions P2 and P4 correspond to second negative line L2 of first fragment F1.
  • the second line L2 of second fragment F2 enables to create other coded data to be revealed.
  • the preceding steps used for the building of the first line are repeated for this second line L2, with another coded information.
  • the second coded information consists also in dividing the second line L2 of the second fragment F2 into four portions P1' to P4' of different size. Portions P1' and P3' correspond to positive first line of first fragment, while portions P2' and P4' correspond to negative second line of first fragment. Then, knowing this second code, it is possible to build the second line L2 of the second fragment F2, by applying the corresponding positive or negative matrices of dots for each portion of line.
  • This example is a simple example for illustration purpose, but it is possible to code more than two sets of data/image to be revealed, and each original pixel can be subdivided into matrix of more than 2x2 dots.
  • the computation of the two fragments is advantageously made by means of a computer software and then the two fragments are printed or applied or laser engraved simultaneously on both sides of the portion 12, through which the fragments are intended to be viewed and to overlap each other.
  • Figure 5 shows an example of the kind of information that can be revealed by the two fragments F1, F2 of figures 3 and 4 , when viewing these two fragments through the thickness of the document while the identification document is tilted.
  • the document is tilted in such a manner that when a viewer look at the two overlapping fragments F1, F2, the first line L1 of second fragment F2 is over the second line L2 of first fragment F1.
  • the coded first set of data which is surrounded by continuous thick lines 51, appears brighter than the background, while the second line L2 of second fragment F2 does not let appearing the second coded set of data, which is hidden into the background.
  • the document is tilted in such a manner that when a viewer look at the two overlapping fragments F1, F2, fragment F2 completely covers fragment F1, i.e. first line L1 of F2 overlaps first line F1 of F1 and second line L2 of F2 overlaps second line L2 of F1.
  • first line L1 of F2 overlaps first line F1 of F1
  • second line L2 of F2 overlaps second line L2 of F1.
  • the coded first set of data which is surrounded by continuous thick lines 51', appears to be darker than the background
  • the coded second set of data which is surrounded by dashed thick lines 52, appears to be brighter than the background.
  • the document is tilted in such a manner that when a viewer look at the two overlapping fragments F1, F2, the second line L2 of second fragment F2 overlaps the first line F1 of first fragment F1.
  • the coded first set of data is completely hidden into the background so that it is not visible to human eye, and the coded second set of data, which is surrounded by dashed thick lines 52', appears to be darker than the background.
  • the two fragments F1, F2 can overlap each other in such a manner that the two sets of data are hidden into the background and none of them can be viewed by the viewer.
  • the embodiments that have just been illustrated and described relate to monochromatic examples with different grey levels.
  • the invention is not limited to such monochromatic embodiments and it can also be applied to all multicolor embodiments.
  • two different colors can be chosen for each fragment.
  • two colors of each fragment can be for example opposed in the spectrum of colors, so that they display a black color when they overlap each other, by subtractive synthesis.
  • the first fragment F1 can be made with matrices of dots in which dark dots are in magenta color and bright dots are in yellow color
  • the second fragment F2 is made with matrices of dots in which dark dots are in cyan color and bright dots are in yellow color.
  • the two fragments overlap each other, depending on the tilt angles, they display variable information darker or brighter than the background and also display additional information with another color different from the colors used for the fragments.
  • first fragment F1 can be made with matrices of dots having red dots
  • second fragment F2 can be made with matrices of dots having green dots.
  • the two overlapping fragments enable to display a third color, yellow in the example, by additive synthesis.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Printing Methods (AREA)
EP08305976A 2008-12-19 2008-12-19 Élément anti-contrefaçons pour document d'identification, procédé de fabrication d'un tel élément, et document d'identification sécurisé Withdrawn EP2199098A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08305976A EP2199098A1 (fr) 2008-12-19 2008-12-19 Élément anti-contrefaçons pour document d'identification, procédé de fabrication d'un tel élément, et document d'identification sécurisé
PCT/EP2009/067502 WO2010070089A1 (fr) 2008-12-19 2009-12-18 Élément anti-contrefaçon pour document d'identification, procédé pour fabriquer un tel élément, et document d'identification sécurisé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08305976A EP2199098A1 (fr) 2008-12-19 2008-12-19 Élément anti-contrefaçons pour document d'identification, procédé de fabrication d'un tel élément, et document d'identification sécurisé

Publications (1)

Publication Number Publication Date
EP2199098A1 true EP2199098A1 (fr) 2010-06-23

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EP08305976A Withdrawn EP2199098A1 (fr) 2008-12-19 2008-12-19 Élément anti-contrefaçons pour document d'identification, procédé de fabrication d'un tel élément, et document d'identification sécurisé

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EP (1) EP2199098A1 (fr)
WO (1) WO2010070089A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974651A1 (fr) * 2011-05-01 2012-11-02 Signoptic Technologies Procede d'authentification unitaire d'un objet materiel au moyen d'un algorithme de cryptographie visuelle et d'une signature matiere
EP2722193A1 (fr) * 2012-10-19 2014-04-23 Gemalto SA Support de données sécurisées et procédé de production dudit support de données sécurisées
US10479128B2 (en) * 2017-10-27 2019-11-19 Assa Abloy Ab Security feature
EP4019270A1 (fr) * 2020-12-23 2022-06-29 Thales DIS France SA Ensemble de sécurité et son procédé de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054760A1 (de) * 2010-12-16 2012-02-16 Giesecke & Devrient Gmbh Sicherheitselement, Verfahren zum Herstellen desselben und Datenträger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282563A (en) * 1993-10-07 1995-04-12 Central Research Lab Ltd A composite image arrangement for documents of value
GB2289016A (en) * 1994-04-22 1995-11-08 Yeda Res & Dev Validating encrypted security pixel array.
WO2003019483A1 (fr) * 2001-08-22 2003-03-06 Mikhail Vasilievich Shovgenyuk Element graphique destine a la protection des billets de banque, papiers valeurs et documents et procede de fabrication
JP2005001345A (ja) * 2003-06-16 2005-01-06 National Printing Bureau 真偽判別形成体
EP1886827A1 (fr) * 2006-08-11 2008-02-13 National Bank of Belgium Image cachée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282563A (en) * 1993-10-07 1995-04-12 Central Research Lab Ltd A composite image arrangement for documents of value
GB2289016A (en) * 1994-04-22 1995-11-08 Yeda Res & Dev Validating encrypted security pixel array.
WO2003019483A1 (fr) * 2001-08-22 2003-03-06 Mikhail Vasilievich Shovgenyuk Element graphique destine a la protection des billets de banque, papiers valeurs et documents et procede de fabrication
JP2005001345A (ja) * 2003-06-16 2005-01-06 National Printing Bureau 真偽判別形成体
EP1886827A1 (fr) * 2006-08-11 2008-02-13 National Bank of Belgium Image cachée

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974651A1 (fr) * 2011-05-01 2012-11-02 Signoptic Technologies Procede d'authentification unitaire d'un objet materiel au moyen d'un algorithme de cryptographie visuelle et d'une signature matiere
WO2012150411A1 (fr) * 2011-05-01 2012-11-08 Signoptic Technologies Procede d'authentification unitaire d'un objet materiel combinant cryptographie visuelle et signature matiere
TWI563452B (fr) * 2011-05-01 2016-12-21 Signoptic Technologies
EP2722193A1 (fr) * 2012-10-19 2014-04-23 Gemalto SA Support de données sécurisées et procédé de production dudit support de données sécurisées
WO2014060504A1 (fr) * 2012-10-19 2014-04-24 Gemalto S.A. Support de données sécurisé et procédé de production dudit support de données sécurisé
US10479128B2 (en) * 2017-10-27 2019-11-19 Assa Abloy Ab Security feature
EP4019270A1 (fr) * 2020-12-23 2022-06-29 Thales DIS France SA Ensemble de sécurité et son procédé de fabrication
WO2022136241A1 (fr) * 2020-12-23 2022-06-30 Thales Dis France Sas Ensemble de sécurité et son procédé de fabrication

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