EP2134554A2 - Doucment comprising a security element, reading appliance and method for reading a security element - Google Patents
Doucment comprising a security element, reading appliance and method for reading a security elementInfo
- Publication number
- EP2134554A2 EP2134554A2 EP08718246A EP08718246A EP2134554A2 EP 2134554 A2 EP2134554 A2 EP 2134554A2 EP 08718246 A EP08718246 A EP 08718246A EP 08718246 A EP08718246 A EP 08718246A EP 2134554 A2 EP2134554 A2 EP 2134554A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical element
- document
- security feature
- state
- document according
- 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
Links
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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
- B42D25/30—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
-
- 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
- B42D25/333—Watermarks
-
- 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
- B42D25/355—Security threads
-
- 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
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
- B42D25/391—Special inks absorbing or reflecting polarised light
-
- 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
-
- 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
- G07D7/12—Visible light, infrared or ultraviolet 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
- G07D7/06—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
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/128—Viewing devices
-
- B42D2033/26—
-
- B42D2033/44—
-
- B42D2035/20—
-
- B42D2035/24—
Definitions
- the invention relates to a document with a security feature, in particular a value or security document, a reading device for such a document and a method for reading a security feature.
- optical security features include, for example:
- Guilloche are printed on the document with the help of so-called line printing. They are generally made up of different colors of superimposed wave and loop patterns;
- Micro-font These are printed letters in the smallest font. With the naked eye, the micro-writing can hardly be recognized. For example, micro-typeface is incorporated into the motifs on the euro banknotes as a picture element. With the help of a magnifying glass, the micro-font can be read;
- Metameric systems Due to metameric color uniformity, different spectral compositions of light can cause the same color impression in humans and, for example, make them visually perceptible by means of color filters or variable illumination sources; - Imprints with fluorescence, phosphorescence and / or up-conversion colors;
- Barcodes in particular one- or two-dimensional barcodes, monochrome or multicolor
- OTI - Optical Variable Ink Optically variable colors
- - see-through window A window made of a transparent plastic film is incorporated in the document;
- - mottled fibers the paper of the document is mixed with fibers that shine in different colors under UV light;
- a luminescent element is arranged under a layer formed as an authenticity element in order to be able to carry out a visual or mechanical optical authenticity check under all lighting conditions.
- an authenticity check is possible even in the dark, without a separate light source is required.
- the authenticity element can be checked independently of the state of the luminescent element in each case.
- the invention provides a document with an optical security feature, such as a security document or security document, in particular a means of payment, a chip card, an identity document, a proof of entitlement, a means of payment or the like.
- a security document or security document in particular a means of payment, a chip card, an identity document, a proof of entitlement, a means of payment or the like.
- the document may be paper-based and / or plastic-based.
- the document according to the invention has a security feature which is arranged in front of an optical element in a direction of incidence of radiation for viewing or mechanically detecting the security feature.
- the optical element can be switched between first and second states in which the optical element has different optical properties. For example, the optical element in its first state generates a background for the security feature against which the security feature is optically detectable. In its second state, for example, the optical element, on the other hand, generates a background for the security feature, before which the security feature can not be detected visually and / or mechanically optically.
- a document according to the invention can be designed to be particularly tamper-proof, since readjustment of the document is not possible either by means of conventional security printing techniques or with digital techniques alone.
- one of the states of the optical element is the normal state in which the security feature can not be detected optically.
- the optical element transitions at least temporarily into its other state in which the security feature can be detected optically.
- the optical element has a first state in which it acts transmissively and a second state in which it is reflective. Only when the optical element is in its transmissive state is it possible to check the security feature on the back of the document.
- the optical element is switchable by coupling energy from its first state into its second state and / or from its second state into its first state.
- the coupling of the energy can be effected directly, for example by an electromagnetic field, into the optical element so that it is brought into its second, substantially transparent state.
- the coupling of the energy can also be done via a separate coupling element, such as a contact-type, non-contact or dual-mode
- Interface in particular a chip card interface or an RF interface.
- the coupling element may be, for example, an antenna or a
- Coil act, for example, for inductive coupling of a voltage that switches the optical element in its second, substantially transparent state.
- the optical element is bistable, i. the optical element remains in its respective state as long as it is not switched.
- the optical element is therefore necessary for it to be switched back from its second, essentially transparent state into its first, substantially non-transparent state after inspection of the optical security feature. This can be done by a corresponding circuit of the document and / or by re-coupling energy, for example from an external reader.
- the optical element is semi-bistable.
- the optical element thus remains in its first state. After the optical element has been switched to its second state, it remains in this second state for a certain time, before it then automatically falls back into the first state.
- This embodiment has the advantage that only a single switching operation is required to enable the optical element for a certain period for the inspection of the optical security feature of the document in its second state, from which it then automatically without further switching action back to the first state falling back.
- the first can be essentially reflective, the second essentially being absorbent.
- the first state may be substantially absorbent, the second substantially reflective.
- the first state may be substantially non-transparent and the second substantially transparent, or vice versa.
- the optical element includes a bistable rotating element display with rotating elements which are light-absorbing in a first rotational position and translucent in a second rotational position so that the optical security feature of the document is obscured when the rotational elements are in their first rotational positions ,
- the optical element includes a bistable rotary element display with rotating elements which are light-absorbing in a first rotational position and reflective in a second rotational position, so that the optical security feature of the document is not recognizable when the rotary elements in their first rotational positions are located.
- the optical element includes an electrophoretic or electrochromic display device.
- the optical element includes an electrostatic wetting element, i. a so-called electrowetting display device.
- the optical element comprises a liquid crystal display device, in particular with cholesteric or nematic liquid-crystalline materials.
- the optical element includes a flexible display, as available, for example, from Citala (http://www.citala.com).
- the optical element includes a microelectromechanical system (MEMS), such as a microshutter array, as available, for example, from Flixel Ltd (www.flixel.com).
- MEMS microelectromechanical system
- the optical element includes a display device based on ferroelectric materials.
- the optical element includes a display device based on organic light-emitting diodes.
- the display device forming the optical element may include, for example, matrix-type display elements.
- the display elements need not necessarily be controlled individually, but it is sufficient a collective control of the display elements in order to put them in each case in the first, essentially non-transparent state or the second, substantially transparent state.
- the display device forming the optical element may include, for example, matrix-type display elements.
- the display elements do not necessarily have to be individually controlled, but a collective activation of the display elements is sufficient to put them in the first, essentially non-reflective state or the second, substantially reflective state.
- the optical security feature of the document is a guilloche, micro-writing, a metameric system, a print with fluorescence, phosphorescence and / or up-conversion color, an imprint with infrared color, Optical variable ink (OVI), a hologram or kinegram (transparent or reflective), a watermark, a passport print, a see-through window, a pass-through passport, a transmission hologram, a holographic filter that selectively selects wavelengths from the spectrum of the visible light or other transmissive elements, mottled fibers, a security thread and / or microperforations.
- the security feature includes optically readable information.
- the security feature is a digital watermark or a one- or two-dimensional barcode. The watermark or barcode can be printed on the document.
- the security feature is formed by an optical data memory, in particular a holographic data memory, in particular based on plastic.
- the security feature stores biometric data, such as facial data, fingerprint data and / or iris scan data.
- biometric data such as facial data, fingerprint data and / or iris scan data.
- the document is a machine-readable travel document (MRTD), in particular according to an ICAO (International Civil Aviation Organization) standard.
- MRTD machine-readable travel document
- ICAO International Civil Aviation Organization
- the biometric data may be the biometric data of the wearer of the MRTD.
- the security feature stores data that can be used within the framework of a so-called basic access control.
- the document has a machine-readable zone (MRZ) in which optically readable data is stored.
- MMRZ machine-readable zone
- This data, a cipher of this data, or a hash of that data may be stored in the security feature.
- the document includes an integrated electronic circuit for driving the optical element to transfer it from its first to the second state and / or from its second to its first state, and if necessary from its state in which a check of the security feature is possible to restore to its normal state after an optical access to the security feature has taken place.
- the integrated electronic circuit may have an interface or be connected to an interface via which the energy for operation of the integrated electronic circuit and for driving the optical element is coupled contactless or contact-based.
- the interface may be a smart card or RF interface.
- the invention relates to a reading device for a document according to the invention.
- the reader has means for initiating the switching of the optical element between the first and second states to allow optical access to the security feature of the document.
- the invention relates to a method for reading a security feature of a document according to the invention.
- Figure 1 is a block diagram of an embodiment of an inventive
- FIG. 2 shows a block diagram of a further embodiment of a document according to the invention
- FIG. 3 shows a block diagram of a further embodiment of a document according to the invention and a reader according to the invention
- FIG. 4 shows a cross-section of a further embodiment of a document according to the invention, when the optical element is in its first state
- FIG. 5 shows the embodiment of FIG. 4 when the optical element is in its second state
- 6 shows a cross-section of a further embodiment of a document according to the invention, wherein the security feature has a line pattern when the optical element is in its first state
- FIG. 5 shows the embodiment of FIG. 4 when the optical element is in its second state
- 6 shows a cross-section of a further embodiment of a document according to the invention, wherein the security feature has a line pattern when the optical element is in its first state
- FIG. 5 shows the embodiment of FIG. 4 when the optical element is in its second state
- 6 shows a cross-section of a further embodiment of a document according to the invention, wherein the security feature has a line pattern when the optical element is in its first state
- FIG. 7 shows the embodiment of FIG. 6 when the optical element is in its second state
- FIG. 8 shows a cross-section of a further embodiment of a document according to the invention, the security feature being shown as a volume
- Hologram is formed, and the optical element is in its first state
- FIG. 9 shows the embodiment of FIG. 8 with the optical element in its second state
- FIG. 10 shows a cross-section of a further embodiment of a document according to the invention, wherein the optical element is in its first state
- FIG. 11 shows the embodiment of FIG. 10 with the optical element in its second state
- FIG. 12 shows a cross-section of a further embodiment of a document according to the invention, the optical element being in its first position
- FIG. 13 shows the embodiment of FIG. 12, with the optical element in its second state
- FIG. 14 shows a cross-section of a further embodiment of a document according to the invention, wherein the optical element is in its first state
- FIG. 14a shows a cross-section of a further embodiment of a document according to the invention, wherein the optical element is in its first state
- FIG. 15 shows the embodiment of FIG. 14, with the optical element in its second state
- FIG. 15 a shows the embodiment of FIG. 14 a, wherein the optical element is in its second state
- FIG. 16 is a block diagram of another embodiment of a document according to the invention and an embodiment of a reader according to the invention,
- FIG. 17 shows a flowchart of an embodiment of a method according to the invention.
- FIG. 1 shows an embodiment of a document 100 according to the invention in a schematic sectional view.
- the document 100 has a security feature 102, which may be any known from the prior art optical security feature.
- the security feature 102 is placed on the document 100 or embedded within the body of the document 100 so that it is not visible from the back 104 of the document 100.
- the rear side 104 of the document can, however, also be transparent, so that the security feature 102-depending on the state of the optical element 108 -is visible from the rear side 104.
- the security feature 102 is a see-through passport, a portion of a pass-through pass, a transmission hologram, a holographic filter that selectively passes wavelengths from the visible light spectrum, a see-through window or other transmissive element.
- the optical element 108 is arranged in the body of the document 100.
- the optical element 108 is switchable between at least two different states, in which the optical element 108 each has different optical properties.
- the optical element 108 serves to generate various backgrounds for the security feature 102, in front of which the security feature 102 is optically detectable or optically non-detectable.
- the optical element 108 can, for example, in its first state, have an absorbing effect on the incident radiation, while it is reflective in its second state.
- the reader 112 may be configured as an energy source, from which energy is coupled into the optical element 108 in order to switch it. If the optical element 108 is a semi-bistable optical element, then a single energy pulse may be sufficient to bring the optical element 108 into a specific state for a certain period of time, from which it then automatically returns after this time has elapsed , Conversely, if the optical element 108 is a bistable optical element, then another energy pulse may be required to restore the optical element to its original state.
- the optical element 108 may also be configured such that a constant coupling of energy is required to keep the optical element 108 in a certain state. If the supply of energy is interrupted, the optical element 108 immediately falls back to its original state in such an embodiment.
- the optical element 108 may be formed as a bistable rotary element display or as a bistable electrophoretic display, as known per se from WO 03 / 009059A1, for example.
- the optical element 108 includes a display device with, for example, an electrochromic display.
- the continual supply of energy is required to maintain the optical element 108 in its second state, it may include an LCD display.
- the optical element 108 includes electrically or magnetically charged rotary elements. By radiating a corresponding electromagnetic field from the reader 102, the rotary elements can be moved so that the optical element 108 is switchable between its first and second states. In such an embodiment, the coupling of the energy is thus directly into the optical element 108th
- FIG. 2 shows an alternative embodiment of a document 100 according to the invention with a coupling element 114 for coupling energy for driving the optical element 108.
- the coupling element 114 can be designed as a contact-type, contactless or dual-mode interface, in particular as a chip card Interface or RF interface.
- the coupling element 114 may be an antenna or a coil, for example, to inductively couple in a voltage by which the optical element 108 is set in its second state.
- the coupling element 114 is connected by a line 116 to the optical element 108 in order to drive it and, if necessary, to supply it with energy.
- a line 116 to the optical element 108 in order to drive it and, if necessary, to supply it with energy.
- Such an arrangement offers the advantage of a special security against manipulation, since it can not be removed from the document 100 without destruction and inserted into another document body. This is especially the case when the line 116 runs within the document body.
- the document body of the document 100 can be paper-based and / or plastic-based, for example in the form of a paper-based travel document or a chip card.
- FIG. 3 shows an embodiment of a reading device 112 according to the invention.
- the reading device 112 has a power source 118 for coupling energy into the coupling element 114, for example via a contact-type or contactless interface.
- the reader 112 further has a radiation source 120 for generating a reading beam 122 for optically checking the security feature 102 of the document 100.
- the reader 112 has one or more optical sensors, such as the optical sensors 124 and 126.
- the optical sensor 124 is positioned on the same side as the radiation source 120 with respect to the document 100 so that it is used to detect the the security feature 102 and optionally of the optical element 108 due to the reading beam 122 reflected radiation 128 is formed.
- the optical sensor 126 is arranged opposite the rear side 104 of the document 100 in order to detect the transmitted radiation 130, ie the portion of the reading beam that has been transmitted by the security feature 102 and the optical element 108.
- a receiving area 132 for receiving the document 100 may be formed, as shown in FIG.
- the optical sensors are shown symbolically. In particular, it is possible to arrange a plurality of sensors to detect large-area reflected patterns, such as e.g. Furthermore, the sensors can be aligned via further optical aids, for example beam splitters, so that they can also detect light reflected in the direction of the radiation source 120.
- the reader 112 has a processor 119 for executing program instructions 121 and 123 for controlling the various components of the reader 112 and for evaluating the signals supplied by the optical sensor 124 and / or the optical sensor 126, respectively. Furthermore, the processor 119 may control an interface 125 of the reader 112, which may be a user interface and / or a network interface. Via the interface 125, the data obtained on the basis of the evaluation and / or other data read from the document 100 can be output.
- FIG. 4 shows a cross-section of an embodiment of a document 100 according to the invention.
- the document has a carrier 134, which may be plastic and / or paper-based and which may include other security features, imprints or the like.
- the optical element 108 is arranged on the carrier 134.
- FIG. 4 shows the optical element 108 in its first state in which it acts as an absorbent.
- a further layer 136 may be arranged, on which the optical security feature 102 is located.
- the document 100 may still have a protective layer 138 over the security feature 102.
- the security feature 102 is designed to be reflective for radiation of a particular spectral range, such as green light, whereas it acts as a transmissive component for other spectral components in the visible range, in particular red and blue light.
- the security feature 102 may be formed as a volume hologram.
- FIG. 4 shows by way of example the red component 122 ', the green component 122 “and the blue component 122'" of the reading beam 122.
- the red component 122 'and the blue component 122' "transmit through the security feature 102, since the security feature 102 in FIG
- reflected radiation 128 generates a green color impression, that is, image 111, in user 110 (see FIGS. 1 and 2).
- Figure 5 shows the document 100 after the optical element 108 has been switched to its other state. While the optical element 108 generates a black background in its first state shown in FIG. 4, it produces a white or a reflective background in its second state shown in FIG. In this state, the optical element 108 acts as a reflector.
- the embodiment of the document 100 of FIGS. 4 and 5 is particularly advantageous when the security feature 102 is a volume reflection hologram. Namely, the visibility of a volume reflection hologram is significantly improved when it is on a dark background. For example, full-color holograms, with a suitable choice of the characteristics of the holographic recording medium having, for example, a material thickness of about 10 ⁇ m and a refractive index modulation between 10 -3 and 10 -2 on a white background, are very difficult, but very much against a black background clearly visible. Thus, in the embodiment of FIGS. 4 and 5, contrast enhancement for the security feature 102 formed as a volume hologram can be achieved when the optical element 108 is in its absorbing, ie, black, state.
- the optical element 108 can be designed so that it can be switched between two different colors.
- the optical element 108 may be configured to be black in its first state to provide a black background for viewing the security feature 102. In its second state, however, the optical element 108 has a color which is approximately equal to the color in which the security feature 102 reflects or scatters an incident reading beam 122.
- the security feature structure is not visible to the user 110 because the background created by the optical element 108 is the same color as the security feature 102 when the optical element is in its second state.
- the security feature 102 may also be formed as an active radiation source, which generates radiation of a particular color itself.
- the optical element 108 can then be embodied such that it has a different color than the security feature 102 in its first state, for example black, and in its second state essentially the same color with which the security feature 102 Radiation radiates.
- This embodiment has the advantage that a reading beam 122 is not absolutely necessary.
- the security feature 102 may be a luminescent marker.
- the luminescent label emits radiation of a particular color.
- the optical element 108 is then black in its first state, for example, and in its second state has a color that is approximately equal to the color in which the security feature 102 emits radiation.
- the security feature 102 may be a luminescent marker.
- the luminescent label emits radiation of a particular color.
- the optical element 108 is then black in its first state, for example, emits light in its second state, which excites the security feature 102 for the emission of radiation.
- this light emits a color impression which corresponds to the color impression of the first switching state of the optical element 108.
- the optical element 108 In the second switching state, however, the optical element 108 has a different color impression, so that it can be perceived.
- this light emits a color impression which corresponds to the color impression of the first switching state of the optical element 108.
- the optical element 108 In the second switching state, however, the optical element 108 emits light with a different color impression, particularly preferably with a contrast or complementary color, so that the security feature 102 can easily be verified.
- the optical element 108 may preferably be formed as an active radiation source.
- the optical element is not luminescent in its first state, ie, for example, black.
- the optical element 108 is luminescent, with the radiation emitted by the optical element 108 due to luminescence being similar or identical to that of the security feature 102.
- the same effect can be achieved by using an organic light emitting diode or an organic light emitting diode display as the optical element 108.
- the security feature 102 may consist of a print whose color is metamer with the color of the optical element 108 when the optical element is in its second state. In this second state, which is preferably the normal state of the optical element 108, the printed motif of the security feature 102 can only be observed under certain exposure conditions.
- the optical element 108 is temporarily switched from its second state to its first state in which it assumes a contrasting color, preferably black or white.
- the security feature 102 is a print in a color which reflects linearly polarized light of a first polarization direction.
- the optical element 108 is then designed such that it reflects linearly polarized light of a second polarization direction, the second polarization direction being rotated by 90 ° with respect to the first polarization direction.
- the component of the reading beam 122 which lies in the first polarization direction is therefore reflected by the security feature 102, whereas the component of the reading beam 122 which lies in the second polarization direction is reflected by the optical element 108.
- the security feature 102 is a print of one color.
- the optical element 108 switches between a state in which the optical element has the same color as the security feature 102 and a second state which has a color with the same color impression (metameric color).
- the optimal switch element 108 between the color of security feature 102 and a contrasting color or in another form between a metameric color and a contrasting color.
- a contrasting color is any color which allows an optical detection of the security feature, particularly preferably without the aid of technical means.
- the reading beam 122 is reflected in total by the document 100.
- the security feature 102 can only be detected with the aid of a polarization filter.
- the optical element 108 can be switched to a contrasting color, preferably black or white.
- the optical element 108 may also be designed such that in its other state it reflects linearly polarized light of the first polarization direction. In the latter case, only the component of the reading beam 122 is then reflected by the document 100, which lies in the first polarization direction. The security feature 102 can then also be detected without a polarization filter.
- the security feature 102 is a print in a color that absorbs visible light but does not absorb infrared light.
- the visible components of the reading beam 122 are therefore absorbed by the security feature 102, whereas the infrared component of the reading beam 122 is not absorbed but transmitted, so that the infrared component of the reading beam can reach the optical element 108 located below the security feature 102.
- the optical element 108 is here designed so that it absorbs infrared light in one state, and in its other state does not absorb infrared light, but instead, for example, reflects or transmits it. Depending on the switching state of the opti see element 108 may thus be detected by the reader 102, a signal in the infrared region or not.
- the security feature 102 is a non-solid print in one color, which Absorbs light from an invisible spectral component, such as infrared light, but transmits visible light.
- an invisible spectral component such as infrared light
- Such a security feature 102 can also be checked with the aid of the optical element 108 if it has a state in which it absorbs infrared light and has another state in which it does not absorb infrared light, that is, for example, reflects or transmits it.
- the optical element 108 may have identical, similar or different properties in its two states in the visible region of the light.
- FIG. 6 shows an embodiment of a document 100 according to the invention with a security feature 102 that has a structuring, such as a line pattern.
- FIG. 6 shows by way of example the lines 140, 142 and 144 of the security feature 102.
- the reading beam 122 is not directed perpendicularly, as in the embodiment of FIGS. 4 and 5, but at an angle to the document 100, as shown in FIG. Where the reading beam 122 hits one of the lines of the security feature 102, a spectral component of the reading beam 122 is reflected, whereas other spectral components of the reading beam 122 are transmitted.
- the reflected radiation 128 results. Due to the reflected radiation 128, the user 110 has the impression of a line pattern 146, that is, an image of the lines 140 , 142, 144, ... of the security feature 102.
- This embodiment also works if the line pattern is normally reflective, ie not wavelength selective. In the case of the absorptively connected security element 108, the line pattern is seen in high contrast; in the case of the reflective element 108 switched on, this contrast disappears.
- FIG. 7 shows the document 100 of the embodiment of FIG. 6 when the optical element 108 is in its other state in which it has a reflective effect.
- the spectral components transmitted on the lines of the security feature 102 that is to say in particular the red component 122 'and the blue component 122' ", are then not absorbed by the optical element 108, but reflected, resulting in a changed line pattern 148 resulting from an overlay of the line pattern 146 with lines 150 created by the red and blue components 112 'and 112' ".
- the lines 150 are approximately magenta due to the blanking of the green components 122 ".
- the layer 136 may be about 100 .mu.m high, so that for viewing at 45.degree., Printing with lines of ⁇ 200 .mu.m width and a density of about 2.5 lines per millimeter or less may be selected.
- the layer can be, for example, about 250 ⁇ m high, in which case a printing with lines of ⁇ 500 ⁇ m width can be selected.
- the optical element 108 may also form a white surface in its state shown in FIG. In this case, the magenta lines 150 would be seen in lower brightness from arbitrary angles; however, the perception as a changeable line image also remains in this embodiment.
- FIG. 8 shows an embodiment of the document 100 in which the security feature 102 is designed as a volume hologram.
- the volume hologram is such that the outgoing observation beam is observable at an angle other than that expected by the classical reflection condition. If, for example, the reading beam 122 impinges on an image point 152 of the volume hologram of the security feature 102 exemplified in FIG. 8 at an angle of incidence of approximately 45 °, the reflected radiation 128 results at an observation angle of 0 °, ie. the pixel 153.
- the optical element 108 acts in its state shown in Figure 8 absorbing. That is, the red and blue components 122 'and 122' "of the read beam 122 are absorbed by the optical element 108.
- FIG. 9 shows the document 100 in the embodiment of FIG. 8 after the optical element 108 has been switched to its other state in which it has a reflective effect.
- the red and blue components 122 'and 122' "of the reading beam 122 are not absorbed by the optical element 108 but reflected, the angle of reflection being equal to the angle of incidence, as shown in FIG red and blue components 122 'and 122' ', an additional magenta point 154 results from the pixel 152 of the volume hologram.
- Figures 10 and 11 show an embodiment of the document 100 wherein the optical element 108 is switchable between an absorbing state as shown in Figure 10 and a transparent state as shown in Figure 11.
- the reading beam 122 can be changed by the security feature 102 or remain unchanged.
- the read beam consists only of a green component 122 ", for which the other layers of the construction of the document, that is, the protective layer 138, the layer 136 and the carrier 134, are transparent Elements 108, the security feature 102 can not be checked, since the reading beam so completely absorbed becomes.
- the state of the optical element 108 shown in FIG. 11 at least part of the reading beam is transmitted, so that a corresponding transmission image 156 results.
- the security feature 102 may be transparent, a portion of a pass-through, a transmission hologram, a holographic filter that selectively passes wavelengths from the visible light spectrum, a see-through window or other transmissive element, or the like.
- FIGS. 12 and 13 show a further embodiment of the document 100 according to the invention.
- the optical element can be switched between the absorbent state shown in FIG. 12 and the transparent state shown in FIG.
- a single image 111 is obtained in the absorbing state of the optical element 108 analogously to the embodiment of FIG. 4, whereas in the transparent state of the optical element 108 an additional image 158 is obtained
- superimposition of the red and blue components 122 'and 122' due to the reflection of the green component 122 "on the security feature 102 appears magenta-colored.
- the security feature 102 may be formed as a hologram in the embodiment considered here.
- FIGS. 14 and 15 show an embodiment of the document according to the invention with a reflector 160.
- the security feature 102 may be a transmission hologram.
- the optical element 108 can be switched between the non-transparent state shown in FIG. 14 and the transparent state shown in FIG. Only when the optical element 108 is in its transparent state, an image 162 is obtained, as shown in FIG.
- the non-diffracted portion of the beam 122 ie the beam 122a.
- the reflector 160 may be a reflective metal surface. This may be formed as part of the optical element 108, for example as a return electrode of the display element forming the optical element 108. When the optical element 108 is switchable between a reflective and an absorbing state, no additional reflector is needed in this embodiment.
- the security feature 102 consists of a Fourier hologram.
- a Fourier hologram has the property of being able to project an image when irradiated with suitable light of a suitable wavelength and an appropriate angle of incidence. This image may be, for example, a data page, a logo or the like. Laser irradiation of classic display holograms can produce the same effect. Figures 14b and 15b show this feature accordingly.
- FIG. 16 shows another embodiment of a document 100 according to the invention and a reader 112 according to the invention.
- the document 100 is a travel document, such as an electronic passport.
- the document 100 has a so-called machine-readable zone (MRZ) 164.
- the coupling element 114 is embodied here as an RF chip. This is used to execute program instructions 166 for the execution of a cryptographic protocol and program instructions 168 for the control of the optical element 108.
- data 170 may be stored in the RF chip, such as sensitive or vulnerable data, in particular biometric data the document carrier 100.
- the processor 119 of the reader 112 serves to execute program instructions 172 which implement the steps of the cryptographic protocol relating to the reader 112.
- the energy source 118 of the reader 112 is embodied here as an RF interface in order to communicate with the RF chip of the document 100.
- the reader 112 may include another optical sensor 174 to detect, for example, the MRZ 164 or other optically readable data.
- the cryptographic protocol implemented by the program instructions 166 and 172 may, for example, be a protocol for performing a Basic Access Control (BAC).
- BAC Basic Access Control
- the RF chip is designed such that only after successful execution of the BAC with the aid of the program instructions 168 the optical element 108 is controlled so that the security feature 102 can be checked by the reader 112.
- the reader 112 For example, first of all the MRZ 164 is detected with the aid of the optical sensor 174. From the data thus acquired, the reader 112 generates a key with which it encrypts a random number transmitted by the RF chip and transmits the cipher with the aid of the RF interface to the RF chip. The RF chip checks this ciphertext for agreement with the expected value. If the cipher corresponds to the expected value, then the BAC is considered successfully passed.
- FIG. 17 shows a corresponding flow chart.
- a BAC protocol is performed between the reader and the document.
- the RF chip Upon successful completion of the BAC protocol, the RF chip sends a switching signal to the optical element of the document so that it is put into a state in which the security feature of the document is verifiable.
- the data stored in the security feature is read out by the reader and checked in step 206 for compliance with the data acquired for executing the BAC protocol from the MRZ of the document. If there is no match, the reader issues an error message in step 208; otherwise, in step 210, the reader accesses the data stored in the document to retrieve it via RF (see the data stored in memory 170 in the embodiment of Figure 16).
- EAC Extended Access Control
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Credit Cards Or The Like (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Holo Graphy (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102007015934.1A DE102007015934B4 (en) | 2007-04-02 | 2007-04-02 | Document with a security feature, reader and method for reading a security feature |
PCT/EP2008/053585 WO2008119708A2 (en) | 2007-04-02 | 2008-03-27 | Document comprising a security element, reading appliance and method for reading a security element |
Publications (2)
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EP2134554A2 true EP2134554A2 (en) | 2009-12-23 |
EP2134554B1 EP2134554B1 (en) | 2016-01-06 |
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EP08718246.5A Active EP2134554B1 (en) | 2007-04-02 | 2008-03-27 | Doucment comprising a security element |
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EP (1) | EP2134554B1 (en) |
JP (1) | JP5196682B2 (en) |
KR (1) | KR101539563B1 (en) |
DE (1) | DE102007015934B4 (en) |
WO (1) | WO2008119708A2 (en) |
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DE102008000676A1 (en) * | 2008-03-14 | 2009-09-17 | Bundesdruckerei Gmbh | Document with an emissive display device |
EP2293257A1 (en) * | 2009-09-07 | 2011-03-09 | Nxp B.V. | System for verification of a document |
DE102010045569A1 (en) * | 2010-09-16 | 2012-03-22 | Giesecke & Devrient Gmbh | Portable data carrier with a flux detector as display element |
DE102010041975A1 (en) | 2010-10-05 | 2012-04-05 | Bundesdruckerei Gmbh | Method for detecting a value and / or security document |
FR2965752B1 (en) * | 2010-10-08 | 2012-11-30 | Arjowiggins Security | SECURITY STRUCTURE INCORPORATING MICROPERFORATIONS |
DE102011117129A1 (en) * | 2011-10-28 | 2013-05-02 | Leonhard Kurz Stiftung & Co. Kg | display |
US10169691B2 (en) | 2013-01-17 | 2019-01-01 | Spectra Systems Corporation | Covert coating for authentication of materials |
DE102014018861A1 (en) * | 2014-12-16 | 2016-06-16 | Giesecke & Devrient Gmbh | Feature for identification by webcam |
JP6658547B2 (en) * | 2015-01-20 | 2020-03-04 | 凸版印刷株式会社 | Display medium provided with diffraction structure and dimming element |
JP6458658B2 (en) * | 2015-06-15 | 2019-01-30 | 凸版印刷株式会社 | Watermark paper |
JP6705323B2 (en) * | 2016-07-22 | 2020-06-03 | 凸版印刷株式会社 | Display medium, article to which the display medium is attached, and display method |
DE102017112954A1 (en) | 2017-06-13 | 2018-12-13 | Bundesdruckerei Gmbh | Method for unambiguously identifying a document and security or value document |
CN114270254A (en) | 2019-08-26 | 2022-04-01 | 伊英克公司 | Electro-optical device including identification mark |
KR20220063259A (en) * | 2019-09-25 | 2022-05-17 | 도판 인사츠 가부시키가이샤 | A color display body, an authentication medium, and a method for determining the truth of a color display body |
DE102020209013A1 (en) * | 2020-07-17 | 2022-01-20 | Bundesdruckerei Gmbh | Laminated body with illuminated security feature and method for its verification |
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WO2000036560A1 (en) * | 1998-12-18 | 2000-06-22 | E Ink Corporation | Electronic ink display media for security and authentication |
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US20020158574A1 (en) * | 2001-04-27 | 2002-10-31 | 3M Innovative Properties Company | Organic displays and devices containing oriented electronically active layers |
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GB0202646D0 (en) * | 2002-02-05 | 2002-03-20 | Optaglio Ltd | Secure hidden data protection optically variable label |
JP2004152226A (en) * | 2002-11-01 | 2004-05-27 | Dainippon Printing Co Ltd | Radio tag |
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JP4355585B2 (en) * | 2004-02-03 | 2009-11-04 | Tdk株式会社 | Personal authentication method, personal authentication system, and optical information recording medium |
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DE102005052070A1 (en) * | 2005-10-28 | 2007-05-03 | Bundesdruckerei Gmbh | display device |
DE102006059865B4 (en) * | 2006-12-15 | 2021-01-07 | Bundesdruckerei Gmbh | Document with a security feature |
DE102006059856A1 (en) | 2006-12-15 | 2008-06-19 | Conti Temic Microelectronic Gmbh | Control unit has key element, and has housing at which there is key element, in which housing has electrical printed circuit board that has detector for detecting position of key element |
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- 2007-04-02 DE DE102007015934.1A patent/DE102007015934B4/en active Active
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- 2008-03-27 KR KR1020097020795A patent/KR101539563B1/en active IP Right Grant
- 2008-03-27 WO PCT/EP2008/053585 patent/WO2008119708A2/en active Application Filing
- 2008-03-27 EP EP08718246.5A patent/EP2134554B1/en active Active
- 2008-03-27 JP JP2010501481A patent/JP5196682B2/en active Active
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EP2134554B1 (en) | 2016-01-06 |
DE102007015934A1 (en) | 2008-10-09 |
WO2008119708A3 (en) | 2009-10-15 |
WO2008119708A2 (en) | 2008-10-09 |
WO2008119708A9 (en) | 2009-05-07 |
DE102007015934B4 (en) | 2021-04-01 |
JP2010524070A (en) | 2010-07-15 |
KR101539563B1 (en) | 2015-07-28 |
KR20100015383A (en) | 2010-02-12 |
JP5196682B2 (en) | 2013-05-15 |
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