EP0372837A2 - Identification cards - Google Patents

Identification cards Download PDF

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Publication number
EP0372837A2
EP0372837A2 EP89312506A EP89312506A EP0372837A2 EP 0372837 A2 EP0372837 A2 EP 0372837A2 EP 89312506 A EP89312506 A EP 89312506A EP 89312506 A EP89312506 A EP 89312506A EP 0372837 A2 EP0372837 A2 EP 0372837A2
Authority
EP
European Patent Office
Prior art keywords
image
sheet
colour
card according
card
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.)
Granted
Application number
EP89312506A
Other languages
German (de)
French (fr)
Other versions
EP0372837B1 (en
EP0372837A3 (en
Inventor
David William Miller
Keith Christopher Steele
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.)
PMI DATA Ltd
Original Assignee
PMI DATA Ltd
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 PMI DATA Ltd filed Critical PMI DATA Ltd
Publication of EP0372837A2 publication Critical patent/EP0372837A2/en
Publication of EP0372837A3 publication Critical patent/EP0372837A3/en
Application granted granted Critical
Publication of EP0372837B1 publication Critical patent/EP0372837B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B42D2033/04—
    • B42D2035/50—
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/309—Photographs
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives

Definitions

  • This invention relates to identification cards (I.D. cards) which comprise security features.
  • I.D. cards It is becoming increasingly important to incorporate security features in I.D. cards to prevent copying and alteration.
  • Various security features have been proposed such as water-marks and patterned lines.
  • various inks and printed images have been proposed which exhibit fluorescence under special lighting conditions or which are only visible in U.V. or infra-red light. It is the object of the present invention to provide an I.D. card which comprises a novel security feature which is easy to produce but which is very hard to copy satisfactorily and which can be seen in daylight.
  • an I.D. card which comprises an opaque base which has adhered thereto a sheet which comprises an easy to recognise representational image of the person to whom the card relates and at least one modulated image which bears a recognisable relationship to the representational image but which has been altered with respect to its density and/or colour and/or spatial characteristics.
  • the representational image of the person to whom the card relates is preferably a three colour image of the person but it may be a black and white or monochrome image.
  • the modulated image or images can for example be a single colour image of the person in a different colour to that of the representational image.
  • the representational image is a three colour image of the person and the modulated image is at least one single colour separation image which is lighter in density than the representational image. Preferably this lighter density image partially overlaps the representational image. If there is more than one modulated image preferably all the images overlap but in such a way that the representational image is clearly recognisable.
  • three colour image is meant an image which exhibits the three primary colour blue, green and red as well as the three secondary colours yellow, magenta and cyan.
  • a subtractive colour system is used and the dyes which form the three colour image are yellow, cyan and magenta.
  • the single colour separation image present in the I.D. card of the present invention may be a blue, cyan, green, yellow, red or magenta image.
  • the three colour image and the single colour separation image of the person may have been formed on the sheet by a printing process wherein three colour separation photographic negatives are prepared of the person and three printing blocks are prepared from these negatives. To prepare the three colour image each of these blocks having been treated with the appropriate coloured ink are printed in register on the sheet. To prepare the single colour separation image one of these blocks is inked and printed on the sheet.
  • the said sheet which carries both the three colour image and the single colour separation image is photographic colour paper.
  • This sheet may be exposed either from photographic negatives or via an electronic signal storage system. If it is to be imaged using photographic negatives a full-three-colour photographic negative of the person is prepared and using a light-filter a single colour separation is prepared, the appropriate light filter being chosen for the required colour of the single colour separation image. Then the colour photographic material is printed using the two negatives.
  • the image of the person is captured on a video camera, digitised and stored as the blue, red and green records of the image.
  • these records are used to form in turn the blue, green and red components of the representational image which may be produced as a black and white image or as a full three colour image.
  • one, two or all three of the blue, red and green records may be used to prepare the processed image or images.
  • the green image only may be employed and its density lightened so there is formed on the sheet a three colour clear representational image of the person and a lightish green image of the person.
  • the red image also may be employed and its density lightened so there is formed on the sheet a three colour clear representational image of the person to whom the card relates, a lightish green image of the person and a lightish red image of the person.
  • Another form of processed image may be a very small image of the person compared with the representational image or a very large enlargement of part of the image of the person as long as this enlargement can be recognised as relating to the representational image.
  • a further form of the processed image would be made at a considerably lower resolution than that of the original image.
  • the image of the subject was represented in the final security card by, say, 40,000 pixels
  • an image of noticeably lower resolution, but still bearing a resemblance to the original subject could be formed using 10,000 pixels, each pixel being 2 x the linear or 4 x the area dimension of the original pixel.
  • the sheet which carries the images in a piece of colour photographic material and the images are formed by a photographic chromogenic process or by using a silver dye bleach colour paper.
  • the images on the sheet may be formed using an ink-jet printer, a heat colour transfer printer or any other method used to form visible images from stored digital records of images.
  • the sheet which carries the images of the relevant person also carries other relevant information in alpha-numeric symbols.
  • the company's logo may also appear on the sheet.
  • a hologram which covers completely the sheet which carries the images.
  • This hologram is a reflection hologram but on a transparent base. This hologram may carry the company's logo and or/a striped pattern to render copying even more difficult.
  • the card may be embossed to enable it to carry further information.
  • the opaque base is composed of a plastics material such as pigmented polyvinyl chloride or polyester.
  • an adhesive the sheet which carries the images and to this either the film which contains the hologram or in its absence the light transparent protective overlay sheet which may be cellulose triacetate or polyester.
  • the adhesive used and the method of lamination employed should be such that the I.D. card can not become delaminated without destroying the individual sheets from which it is made.
  • the back surface of the I.D. card may carry machine readable information in either analogue or digital form.
  • this information is cross-checkable with the alpha-numeric or embossed information on the front of the card, or is cross-checkable with the information contained in the hologram if such be present.
  • FIG 1 there is shown a person 1 being photographed using a video camera 2.
  • This photographic record is stored as blue, red and green separation records of the image in a storage device 3.
  • Attached to the device 3 is a video processor 4.
  • a computer 5 can also feed information to the processor 4.
  • the output of the video processor 4 goes to a colour monitor 6 which is a T.V. screen and output from this goes to the video printer 7. Output from the printer 7 is used to form the images of the sheet 8.
  • the video camera 2 in this case uses beam splitters and filters in its interior and stores the red, green and blue records of the captured image in pixel arrays of charge coupled device in the storage device 3.
  • the computer stores the alpha-numeric data which is to be associated with each person being photographed. This may include data applicable to a large number of persons such as the name of the company and its address and personal data such as the name of the person, the birth date and position of the person in the company.
  • the electronically processed image to be used is a lightish green image of the person
  • the green record is then fed to the video processor and this record is electronically processed to lighten overall the image. This lightened record is then stored.
  • the modulated image and the alphanumeric informationand logo are fed to the video processor, together with the stored altered green record and the relevant alpha-numeric information from the computers in the approximately correct spatical relationship. These features are then viewed on the monitor 6 on which they will appear as they will be printed on the sheet 8. If the lay-out appears to be satisfactory then the signals are fed from the video processor to the video printer 7 via a digital to analogue converter. The printer 7 in this case prints by using visible light.
  • the stored red record is printed though a red filter pixel by pixel on to the photographic colour material sheet 8. This is followed by the green record and finally by the blue record.
  • the altered stored green image is printed through a green filter.
  • the representational image 10 of the person 1. This is a full three colour photographic image.
  • the processed image 11 which is a light green separation image of the three colour image 10.
  • the processed image 11 partially overlaps the representational image 10.
  • the processed image 11 is an altered image of image 10 but bears a recognisable relationship to image 10. It has been found that it is very difficult to forge a I.D. card which carries both a representational image which identifies clearly the card holder and a processed image which has been derived from the representational image.
  • Figure 3 shows an exploded view of the fully prepared card 13 which comprises a transparent cover sheet 14, a white pigmented plastics material base 15, the sheet 8 prepared as just described, a film 16 which is transparent and contains a holographic record of the relevant company, and a transparent cover sheet 17 which acts to protect the film 16 and the sheet 8.
  • a transparent cover sheet 14 which is transparent and contains a holographic record of the relevant company
  • a transparent cover sheet 17 which acts to protect the film 16 and the sheet 8.

Abstract

An ID card which comprises an opaque base which has adhered thereto a sheet which comprises an easy to recognise representational image (10) of the person to whom the card relates and at least one modulated image (11) which bears a recognisable relationship to the representational image but which has been altered with respect to its density and/or colour and/or spatial characteristics.
Preferably the altered image has been modulated electronically.

Description

  • This invention relates to identification cards (I.D. cards) which comprise security features.
  • It is becoming increasingly important to incorporate security features in I.D. cards to prevent copying and alteration. Various security features have been proposed such as water-marks and patterned lines. Also various inks and printed images have been proposed which exhibit fluorescence under special lighting conditions or which are only visible in U.V. or infra-red light. It is the object of the present invention to provide an I.D. card which comprises a novel security feature which is easy to produce but which is very hard to copy satisfactorily and which can be seen in daylight.
  • Therefore according to the present invention there is provided an I.D. card which comprises an opaque base which has adhered thereto a sheet which comprises an easy to recognise representational image of the person to whom the card relates and at least one modulated image which bears a recognisable relationship to the representational image but which has been altered with respect to its density and/or colour and/or spatial characteristics.
  • The representational image of the person to whom the card relates is preferably a three colour image of the person but it may be a black and white or monochrome image.
  • The modulated image or images can for example be a single colour image of the person in a different colour to that of the representational image.
  • In one useful case the representational image is a three colour image of the person and the modulated image is at least one single colour separation image which is lighter in density than the representational image. Preferably this lighter density image partially overlaps the representational image. If there is more than one modulated image preferably all the images overlap but in such a way that the representational image is clearly recognisable.
  • By three colour image is meant an image which exhibits the three primary colour blue, green and red as well as the three secondary colours yellow, magenta and cyan. Usually both in printing and in photography a subtractive colour system is used and the dyes which form the three colour image are yellow, cyan and magenta. However the single colour separation image present in the I.D. card of the present invention may be a blue, cyan, green, yellow, red or magenta image.
  • The three colour image and the single colour separation image of the person may have been formed on the sheet by a printing process wherein three colour separation photographic negatives are prepared of the person and three printing blocks are prepared from these negatives. To prepare the three colour image each of these blocks having been treated with the appropriate coloured ink are printed in register on the sheet. To prepare the single colour separation image one of these blocks is inked and printed on the sheet.
  • For example to prepare a green image both the yellow and the cyan blocks are linked and printed in register.
  • Usually however the said sheet which carries both the three colour image and the single colour separation image is photographic colour paper. This sheet may be exposed either from photographic negatives or via an electronic signal storage system. If it is to be imaged using photographic negatives a full-three-colour photographic negative of the person is prepared and using a light-filter a single colour separation is prepared, the appropriate light filter being chosen for the required colour of the single colour separation image. Then the colour photographic material is printed using the two negatives.
  • Most preferably however the image of the person is captured on a video camera, digitised and stored as the blue, red and green records of the image. When the representational image is required these records are used to form in turn the blue, green and red components of the representational image which may be produced as a black and white image or as a full three colour image. Then in real time one, two or all three of the blue, red and green records may be used to prepare the processed image or images. For example the green image only may be employed and its density lightened so there is formed on the sheet a three colour clear representational image of the person and a lightish green image of the person. In another case the red image also may be employed and its density lightened so there is formed on the sheet a three colour clear representational image of the person to whom the card relates, a lightish green image of the person and a lightish red image of the person.
  • Another form of processed image may be a very small image of the person compared with the representational image or a very large enlargement of part of the image of the person as long as this enlargement can be recognised as relating to the representational image.
  • A further form of the processed image would be made at a considerably lower resolution than that of the original image. Thus, if the image of the subject was represented in the final security card by, say, 40,000 pixels, an image of noticeably lower resolution, but still bearing a resemblance to the original subject, could be formed using 10,000 pixels, each pixel being 2 x the linear or 4 x the area dimension of the original pixel.
  • This would produce an image which could appear to be made of a plurality of tiny coloured blocks.
  • As stated preferably the sheet which carries the images in a piece of colour photographic material and the images are formed by a photographic chromogenic process or by using a silver dye bleach colour paper. However when the images are stored in digital form the images on the sheet may be formed using an ink-jet printer, a heat colour transfer printer or any other method used to form visible images from stored digital records of images.
  • A method of obtaining an I.D. card according to the present invention using an electronic signal storage system is described hereinafter. Preferably the sheet which carries the images of the relevant person also carries other relevant information in alpha-numeric symbols. For example the persons name, the organisation, the department and possibly an address and the birth date of the person. The company's logo may also appear on the sheet. Most preferably however there is incorporated in the I.D. card between the sheet which carries the images and the protective overlay a hologram which covers completely the sheet which carries the images. This hologram is a reflection hologram but on a transparent base. This hologram may carry the company's logo and or/a striped pattern to render copying even more difficult.
  • The card may be embossed to enable it to carry further information. Preferably the opaque base is composed of a plastics material such as pigmented polyvinyl chloride or polyester. To this is laminated by use of an adhesive the sheet which carries the images and to this either the film which contains the hologram or in its absence the light transparent protective overlay sheet which may be cellulose triacetate or polyester. The adhesive used and the method of lamination employed should be such that the I.D. card can not become delaminated without destroying the individual sheets from which it is made.
  • A particularly usefull method of bonding the assembly is that described in European patent 273012.
  • The back surface of the I.D. card may carry machine readable information in either analogue or digital form.
  • Usefully this information is cross-checkable with the alpha-numeric or embossed information on the front of the card, or is cross-checkable with the information contained in the hologram if such be present.
  • The following drawings will serve to illustrate the invention.
    • Figure 1 is block diagram of the apparatus required to prepare an I.D. card according to the present invention.
    • Figure 2 is a top plan view of an I.D. card according to the present invention.
    • Figure 3 is an exploded side view of the I.D. card of figure 2.
  • In figure 1 there is shown a person 1 being photographed using a video camera 2. This photographic record is stored as blue, red and green separation records of the image in a storage device 3. Attached to the device 3 is a video processor 4. A computer 5 can also feed information to the processor 4. The output of the video processor 4 goes to a colour monitor 6 which is a T.V. screen and output from this goes to the video printer 7. Output from the printer 7 is used to form the images of the sheet 8.
  • The video camera 2 in this case uses beam splitters and filters in its interior and stores the red, green and blue records of the captured image in pixel arrays of charge coupled device in the storage device 3.
  • The computer stores the alpha-numeric data which is to be associated with each person being photographed. This may include data applicable to a large number of persons such as the name of the company and its address and personal data such as the name of the person, the birth date and position of the person in the company.
  • In order to prepare the processed image, if for example the electronically processed image to be used is a lightish green image of the person, the green record is then fed to the video processor and this record is electronically processed to lighten overall the image. This lightened record is then stored.
  • Thus to prepare an I.D. card the three colour stored records of the image of the subject, the modulated image and the alphanumeric informationand logo are fed to the video processor, together with the stored altered green record and the relevant alpha-numeric information from the computers in the approximately correct spatical relationship. These features are then viewed on the monitor 6 on which they will appear as they will be printed on the sheet 8. If the lay-out appears to be satisfactory then the signals are fed from the video processor to the video printer 7 via a digital to analogue converter. The printer 7 in this case prints by using visible light. Thus the stored red record is printed though a red filter pixel by pixel on to the photographic colour material sheet 8. This is followed by the green record and finally by the blue record. The altered stored green image is printed through a green filter.
  • After photographic processing the sheet 8 appears as shown in Figure 2.
  • On this card is shown the representational image 10 of the person 1. This is a full three colour photographic image. There is also shown the processed image 11 which is a light green separation image of the three colour image 10. The processed image 11 partially overlaps the representational image 10. As can be seen the processed image 11 is an altered image of image 10 but bears a recognisable relationship to image 10. It has been found that it is very difficult to forge a I.D. card which carries both a representational image which identifies clearly the card holder and a processed image which has been derived from the representational image.
  • Figure 3 shows an exploded view of the fully prepared card 13 which comprises a transparent cover sheet 14, a white pigmented plastics material base 15, the sheet 8 prepared as just described, a film 16 which is transparent and contains a holographic record of the relevant company, and a transparent cover sheet 17 which acts to protect the film 16 and the sheet 8. These five sheets are then laminated together using the adhesive described in E.P. 273012 that the assemblied card 13 can not be delaminated without tearing either or both sheet 8 and film 15.

Claims (10)

1. An I.D. card which comprises an opaque base which has adhered thereto a sheet which comprises an easy to recognise representational image of the person to whom the card relates and at least one modulated image which bears a recognisable relationship to the representational image but which has been altered with respect to its density and/or colour and/or spatial characteristics.
2. An I.D. card according to claim 1 wherein the representational image is a three colour image of the person.
3. An I.D. card according to claim 2 wherein the modulated image is a single colour separation image of the person which is lighter in density than the representational image.
4. An I.D. card according to claim 3 wherein the modulated image or images partially overlap the representational image.
5. An I.D. card according to any one of claims 1 to 4 wherein the modulated image or images have been modulated electronically.
6. An I.D. card according to any one of claims 1 to 5 wherein the sheet which carries the images is a sheet or colour photographic paper.
7. An I.D. card according to claim 6 wherein the photographic paper is silver dye bleach material.
8. An I.D. card according to anyone of claims 1 to 7 wherein the sheet which carries the two images also carries alpha-numeric information which has been printed electronically from a computer store.
9. An I.D. card according to any one of claims 1 to 8 which comprises a protective layer of transparent film material, the sheet which carries the images, a pigmented plastics material base and optionally a protective layer of transparent film material on the base distal to the said sheet.
10. An I.D. card according to claim 9 wherein there is present between the protective transparent layer and the said sheet a sheet of a transparent hologram.
EP89312506A 1988-12-07 1989-11-30 Identification cards Expired - Lifetime EP0372837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8828595A GB8828595D0 (en) 1988-12-07 1988-12-07 Identification cards
GB8828595 1988-12-07

Publications (3)

Publication Number Publication Date
EP0372837A2 true EP0372837A2 (en) 1990-06-13
EP0372837A3 EP0372837A3 (en) 1990-12-12
EP0372837B1 EP0372837B1 (en) 1994-07-13

Family

ID=10648126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89312506A Expired - Lifetime EP0372837B1 (en) 1988-12-07 1989-11-30 Identification cards

Country Status (3)

Country Link
EP (1) EP0372837B1 (en)
DE (1) DE68916764T2 (en)
GB (1) GB8828595D0 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523304A1 (en) * 1991-07-15 1993-01-20 Epc Technology Co., Ltd. Passport comprising an engraved face photograph display sheet
AU649693B2 (en) * 1991-07-12 1994-06-02 Epc Technology Co., Ltd. Engraved face photograph display sheet, face photograph display sheet and certificate for use with the same sheet
WO1997010958A1 (en) * 1995-09-20 1997-03-27 De La Rue International Limited Security document and method for its manufacture
EP0772530A1 (en) * 1994-07-26 1997-05-14 International Data Matrix, Inc. Unalterable self-verifying articles
EP0829779A2 (en) * 1996-09-17 1998-03-18 Sony Electronics Inc. Image transformation using holograms
US6613481B2 (en) * 1998-03-09 2003-09-02 Dai Nippon Printing Co., Ltd. Hologram film having identification information recorded thereon and method for manufacturing the same
WO2008055670A1 (en) 2006-11-08 2008-05-15 Giesecke & Devrient Gmbh Portable data storage medium
EP1935664A1 (en) * 2006-12-21 2008-06-25 Axalto SA Secure identification document and method of securing such a document
EP2004415A1 (en) * 2006-03-17 2008-12-24 Datacard Corporation Secure identification documents
US10688822B1 (en) 2014-12-30 2020-06-23 Morphotrust Usa, Llc Embedding 3D information in documents
DE102022105489B3 (en) 2022-03-09 2023-03-09 Heidelberger Druckmaschinen Aktiengesellschaft Method for providing a printed product and associated authentication information and method for authenticating a printed product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018450B4 (en) * 2007-04-19 2017-08-17 Bundesdruckerei Gmbh Laminated security document

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1281252A (en) * 1960-08-05 1962-01-12 Printing process making it impossible to counterfeit and reproduce any documents printed by this process
FR2611102A1 (en) * 1987-02-12 1988-08-19 Electronique Inf System Method and facility for manufacturing security passes such as identity cards
EP0283233A2 (en) * 1987-03-14 1988-09-21 Holofax Limited Security badge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1281252A (en) * 1960-08-05 1962-01-12 Printing process making it impossible to counterfeit and reproduce any documents printed by this process
FR2611102A1 (en) * 1987-02-12 1988-08-19 Electronique Inf System Method and facility for manufacturing security passes such as identity cards
EP0283233A2 (en) * 1987-03-14 1988-09-21 Holofax Limited Security badge

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU649693B2 (en) * 1991-07-12 1994-06-02 Epc Technology Co., Ltd. Engraved face photograph display sheet, face photograph display sheet and certificate for use with the same sheet
EP0523304A1 (en) * 1991-07-15 1993-01-20 Epc Technology Co., Ltd. Passport comprising an engraved face photograph display sheet
EP0772530A1 (en) * 1994-07-26 1997-05-14 International Data Matrix, Inc. Unalterable self-verifying articles
EP0772530A4 (en) * 1994-07-26 1997-09-24 Int Data Matrix Inc Unalterable self-verifying articles
US5984366A (en) * 1994-07-26 1999-11-16 International Data Matrix, Inc. Unalterable self-verifying articles
WO1997010958A1 (en) * 1995-09-20 1997-03-27 De La Rue International Limited Security document and method for its manufacture
EP0829779A2 (en) * 1996-09-17 1998-03-18 Sony Electronics Inc. Image transformation using holograms
EP0829779A3 (en) * 1996-09-17 1998-09-09 Sony Electronics Inc. Image transformation using holograms
US6613481B2 (en) * 1998-03-09 2003-09-02 Dai Nippon Printing Co., Ltd. Hologram film having identification information recorded thereon and method for manufacturing the same
US7229720B2 (en) 1998-03-09 2007-06-12 Dai Nippon Printing Co., Ltd. Hologram film having identification information recorded thereon and method for manufacturing the same
EP2004415A4 (en) * 2006-03-17 2009-11-04 Datacard Corp Secure identification documents
EP2004415A1 (en) * 2006-03-17 2008-12-24 Datacard Corporation Secure identification documents
US8448991B2 (en) 2006-03-17 2013-05-28 Datacard Corporation Secure identification documents
WO2008055670A1 (en) 2006-11-08 2008-05-15 Giesecke & Devrient Gmbh Portable data storage medium
CN101578183B (en) * 2006-11-08 2012-05-09 德国捷德有限公司 Portable data carrier
US8376410B2 (en) 2006-11-08 2013-02-19 Giesecke & Devrient Gmbh Portable data storage medium
EP1935664A1 (en) * 2006-12-21 2008-06-25 Axalto SA Secure identification document and method of securing such a document
WO2008084315A2 (en) * 2006-12-21 2008-07-17 Gemalto S.A. Secure identification document and method for securing such a document
WO2008084315A3 (en) * 2006-12-21 2008-11-06 Axalto Sa Secure identification document and method for securing such a document
US10688822B1 (en) 2014-12-30 2020-06-23 Morphotrust Usa, Llc Embedding 3D information in documents
US10899160B1 (en) 2014-12-30 2021-01-26 Idemia Identity & Security USA LLC Identification document with multiview image
US11066786B1 (en) 2014-12-30 2021-07-20 Idemia Identity & Security USA LLC Identification document with dynamic window
DE102022105489B3 (en) 2022-03-09 2023-03-09 Heidelberger Druckmaschinen Aktiengesellschaft Method for providing a printed product and associated authentication information and method for authenticating a printed product

Also Published As

Publication number Publication date
GB8828595D0 (en) 1989-01-11
DE68916764D1 (en) 1994-08-18
DE68916764T2 (en) 1995-02-23
EP0372837B1 (en) 1994-07-13
EP0372837A3 (en) 1990-12-12

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