WO2009019038A1

WO2009019038A1 - Verification of security elements with windows

Info

Publication number: WO2009019038A1
Application number: PCT/EP2008/006572
Authority: WO
Inventors: Peter Schiffmann
Original assignee: Giesecke & Devrient Gmbh
Priority date: 2007-08-09
Filing date: 2008-08-08
Publication date: 2009-02-12
Also published as: EP2179403A1; CA2695824A1; DE102007037576A1

Abstract

The invention relates to a method and a device for the verification of security elements of documents of value, such as bank notes, identification cards, payment cards, or the like. The invention further relates to a method and a device for the verification or the validation of valuable items having a display, for example, a computer, notebook or laptop, a cash register of a cash register system, or a handheld device. According to the invention, a first piece of information is disposed in at least one translucent region of a security element. According to the invention, a display displays a second piece of information at least in regions. Another piece of information is hidden either in the first or the second piece of information, or in both pieces of information, that cannot be or can barely be detected and/or read by a viewer without auxiliary means. For the verification or validation of valuable items with a display, a verification element having at least one substrate with at least one translucent region is used according to the invention, wherein a first piece of information is disposed in at least one translucent region of the substrate. According to the invention, verification of the security element or of the valuable item is obtained by the first piece of information in the translucent region of the security element or verification element being placed over the second piece of information and the hidden information becoming detectable and/or readable as a Moire-pattern and/or as metamerie.

Description

Verification of security elements with windows

The invention relates to a method and a device for verifying documents of value, such as banknotes, identity cards, payment cards, tickets, batches or the like, which have a substrate with at least one light-transmissive region, wherein first information is arranged in at least one light-permeable region of the substrate. The invention further relates to a method and an apparatus for Verifi- cation or for checking valuables having a display, such as a computer, notebook or laptop, a cashier of a POS system or a hand-held device.

Translucent areas in security documents, such as windows, are becoming more attractive. Thus, there are already various functionalities for a window in which information contained in the banknote is made visible via a self-certification by, for example, alternately holding the banknote over a white and black background or illuminating it with a laser pointer through the window.

For example, document WO 2006/018171 A1 describes a security element whose transparent or translucent substrate is provided with a mark of authenticity. In this case, a phase-shifting layer and a linearly polarizing layer are applied to a transparent film, wherein the main axis of the phase-shifting layer is rotated by at least 10 ° against the polarization direction of the linearly polarizing layer. The phase shift layer is formed from a birefringent or an optically active material, such as a liquid crystalline material, for example in the nematic or smectic phase. This authenticity mark transmits in transmitted light a first optical Impression and reflected light against a predetermined and easily accessible background a second optical impression, which differs significantly from the first visual impression. This allows a simple and fast authenticity check, in which the security element is first viewed in transmitted light and then held in front of a predetermined background.

The solutions of the prior art make it possible to recognize a specific authenticity mark, but a temporary change of the stored information, for example a monthly change of information, is not possible.

The invention is therefore based on the object of developing an authenticity check of security elements in such a way that the protection against counterfeiting is further increased and a temporary change to hidden information is made possible.

This object is solved by the features of the independent claims. Further developments of the invention are the subject of the dependent claims.

The invention hereby comprises a method and a device for verifying documents of value, such as banknotes, securities, credit cards, debit cards or identity cards, passports, documents, tickets, lots and the like, labels, packaging or other elements for product assurance. Here, a first information is arranged in at least one transparent area of a security element. According to the invention, a separate display, for example a screen of a computer, notebook or laptop, a monitor of a cash register of a cash register system or a display of a handset, at least partially a second information. Either in the first or the second information or in both information is hidden further information that is not or only slightly recognizable and / or readable for a viewer without aids. According to the invention, the security element is verified by placing the first information in the translucent area of the security element over the second information and by recognizing and / or reading the hidden information as a moire pattern and / or as metamerism.

A particular advantage of the invention is that the hidden information includes, for example, the emission value or the currency of a banknote and thus can serve as a verification of authenticity at a point-of-sale terminal. Here, the banknote is placed over the display of the point-of-sale terminal and the information hidden on the banknote is displayed in plain text for the cashier.

The invention further comprises a method and a device for verifying or checking valuables having a display, for example a computer, notebook or laptop, a cash register of a cash register system or a hand-held device. According to the invention, a separate verification element is used that has at least one substrate with at least one light-transmissive region, wherein first information is arranged in at least one light-permeable region of the substrate. Furthermore, at least in some areas a second information is displayed by the display. In the first and / or second information another, for a viewer without aids unrecognizable and / or readable information is hidden. According to the invention, a verification or verification of the valuable article is carried out by the verification element with its first information about the second information is placed and the hidden information in transmitted light as a moire pattern and / or as metamerism recognizable and / or readable.

The particular advantage here is that the hidden information includes, for example, the name of the owner of the valuable item and thus can serve as proof of ownership in case of theft or loss of the valuable item. In this case, the verification element is placed over the display of the object of value and shows for the observer, for example, an investigating authority the information hidden on the display in plain text.

A display, i. a display device, which can alternately display different information or no information, is preferably an active display with its own illumination source that illuminates the display from the back. Likewise, the display can also be a passive display without its own illumination source, with a reflective surface, which is arranged on the back of the display, reflecting daylight or room light and thus illuminates the display indirectly. The invention is preferably also applicable to a novel transparent display whose base body is perceived by a viewer as (nearly) transparent. In this case, the transparent display itself acts as a (nearly) transparent window and the information displayed on the transparent display is displayed as a single or multi-colored haze of the window, which influence or attenuate the light passing through the transparent display.

The hand-held device is, for example, a mobile telephone or cell phone, a digital camera, digital clock, a credit card or a document of identification, for example a passport or an ID card, with display or a portable player for video or audio signals, eg an mp3 player or an I-Pod® from Apple®.

For the purposes of this invention, information is not or only barely recognizable whenever a viewer sees or perceives it without aids from the surrounding information or only at random and weakly. In the same sense, information is always not or only barely legible if a viewer the alphanumeric or textual content of the information without aids from the surrounding information is not or only accidentally and weakly pronounced or read or can not interpret properly.

A moiré pattern in the sense of this invention is an optical phenomenon that can be observed when two superimposed line- or dot-shaped screens are irradiated with a parallel or nearly parallel light bundle. Here, a uniform or non-uniform distribution of pattern primitives is defined as a grid at least in a region of the substrate and the display, wherein the pattern primitives are spaced apart. Pattern primitives are preferably lines, i. Elements whose width is substantially less than their length, and which are formed straight, curved or kinked or have a combination of these three embodiments, or punctiform elements whose width is about the same size as their length, such as points, circles or squares. If two rasters, which may for example be of almost identical construction, are superimposed, the superimposition results in bright areas in certain areas and dark areas in other areas, the so-called Moire pattern.

Preference is given to the linear or punctiform grid - Printed from a single or multi-colored paint and / or adhesive layer on the security element or the verification element, or

- Imprinted in the substrate of the security element or the verification element, or - by laser marking a substrate by means of the prior

Technique known measures generated, for example, color coupler systems in the presence of a tuned to the laser wavelength IR absorber, or

- produced by ablation from a coating applied over the entire surface.

In the latter case, the coating applied over the whole area preferably consists of a metal layer and the removal takes place by a partial demetallization of the metal layer. As demetallization come here a mechanical scraping, a laser ablation, a washing process or other known methods of the prior art into consideration. The full-surface coating may consist of a color based on pigments or dyes. By means of laser radiation, a partial ablation or sublimation of the pigments or dyes by evaporation takes place. The coating may additionally contain IR absorbers tuned to the wavelength of the laser radiation to aid the process.

In this case, an individualization of the hidden information is preferably possible. Thus, any individual information, such as a serial number of a banknote or the name of the owner of the display can be introduced into the linear grid. This is done, for example, by the arbitrary individual information is introduced with a demetallization in a metal layer. Furthermore, the grid is preferably applied on the light-permeable region of the object of value or of the verification element of opaque or opaque colors. This has the advantage that it increases the contrast of the moiré pattern.

In addition, the grid may be applied to the translucent area of the object of value or the verification element on both sides of the translucent area, i. double-sided. In this case, in each case a grid is applied both on the front and on the back of the translucent area, wherein the grid is located on the back of the translucent area exactly opposite the grid on the front. If one looks perpendicularly at the translucent area, then both grids are superposed, so that particularly advantageously the opacity of the grid is increased and thus the visibility of the moire pattern is increased.

Alternatively, the line or dot-shaped grid is also produced from a visually or hardly visible coating and / or adhesive layer. If, for example, an adhesive is applied in a structured manner by means of a printing process, moire structures likewise result from a scattering of the light in the generated adhesive layer.

If the lacquer and / or adhesive layer of the grid is preferably produced by opacifying pigments and / or opaque fillers such as TiO ₂ , the lacquer and / or adhesive layer is visually not visible or only slightly visible in plan view. In view, ie against a background with the same or a similar color as the grid, the grid becomes visible or recognizable. In a further embodiment, the first information of the light-transmissive region is produced by means of a blind embossing of the transparent region of the substrate.

The valuable article or the verification element consists in a preferred embodiment of a card of at least two laminated substrates, which has at least one light-transmissive region. In this case, the grid is applied in or on at least one of the light-permeable areas of the card, wherein the grid is first applied to a light-permeable substrate and then the card is laminated or the card is first laminated and then the grid is introduced into the laminate of the card, for example by means of laser radiation becomes.

If the object of value or the verification element consists of a value document, for example a banknote, with a transparent film element over a window area, the film element to be applied may already contain the screen and corresponding overprints, for example transparent, optically variable colors. Alternatively, the film element can have no or only individual intermediate steps, such as only the grid or only transparent, optically variable colors, which are completed after application to the object of value or the verification element.

For a film-based substrate having opaque and non-masking areas, no separate film element is required. In this case, the grid and corresponding overprints are applied directly to the non-masking area of the substrate. A moiré pattern also results if a grid of scattering elements of blind embossing or optical lenses is applied to the translucent area of the security element or the verification element. The display shows a micro-information that is not visually visible and matched to the lens embossing. In this case, in particular, magnification effects occur, wherein the microinformation is represented enlarged by the superposition with the lenticular grid by a multiple. By way of example, a microphotograph reproduced on the display and not recognizable or readable by a viewer is magnified by superposition with a corresponding lenticular grid in such a way that it can be read by the viewer without difficulty.

Metamerism in the sense of this invention is a color difference which occurs when the type of light or the wavelength range of electromagnetic radiation changes. Thus, two metameric colors appear similar in a first wavelength range, but have a different color impression in a second wavelength range. The first and second wavelength ranges may be completely different or have a certain overlap range. Metameric color pairs are also referred to as partially the same.

The metameric colors or the metameric color pairs in this case have a comparable transparency, and preferably contain no opaque pigments and / or opaque fillers such as TiO ₂ , ie are transparent.

In a preferred embodiment, at least two metameric colors in a first wavelength range, preferably in daylight or similar artificial illumination, produce the same color tone. print. By means of the display, light is now emitted as second information in at least one second wavelength range in which the at least two metameric colors generate at least two different color impressions.

Alternatively, the at least two metameric colors in the first wavelength range produce at least two different color impressions. In this case, light is emitted by the display as second information in at least one second wavelength range, in which the at least two metameric colors produce the same color impression.

If in both cases the display alternately emits light of different wavelengths as second information, a viewer perceives a change between a uniformly colored surface and an area of differently colored partial surfaces. This change preferably takes place in a time sequence. For example, the display emits light of a first wavelength range for one second and then light of a second wavelength range for one second, after which the sequence repeats regularly.

However, mixed forms of moire patterns and metamerism are also possible. For example, the basic pattern elements of the line or dot raster can be imprinted from metameric colors, so that in one area hidden information can be decoded using the Moire effect and another hidden information using metamerism. Thus, several different pieces of information may be hidden in one area. Furthermore, the first, second or hidden information can be executed in one or more colors. Preferably, in this case, the basic pattern elements of a linear or punctiform grid are executed multicolored, so that not only the usual light / dark moiré effect is produced, but also different colors or color gradations are possible via color mixing.

A translucent substrate in the sense of this invention is a substrate which allows incident light to pass through in a certain proportion. When light strikes one side of the substrate, a certain portion of the light is transmitted to the other side of the substrate and exits there again. The greater the percentage of transmitted light relative to the incident light, the more translucent is the substrate. If the percentage is at least 90%, i. If the substrate lets the incident light pass through almost unattenuated, as in the case of a window, the substrate is called transparent. If a proportion of less than 90% of the incident light, preferably between 80 and 20%, passes through the substrate, the substrate is referred to as translucent. On the other hand, a substrate which transmits less than 20%, preferably less than 10% and most preferably about 0% of the incident light, i. where the amount of light passing through with respect to the incident light is low or close to zero, is said to be opaque or non-translucent.

Particularly advantageously, the translucent region of the substrate of the security element or the verification element is a transparent or translucent plastic film, which is designed in one or more layers, or a transparent or translucent region within an otherwise opaque substrate, such as a card body or a paper. The further information, which is not or only barely recognizable and / or readable for a viewer without aids, is hidden either in the first or the second information or also in both information.

If the hidden information is at least partially within the first information, i. on or in the substrate, by overlaying with the second information either all the hidden information becomes visible or only part of the hidden information. If only a part of the hidden information becomes visible, by moving the second information further parts of the hidden information can become visible so that the revealed part of the hidden information moves over the translucent area of the substrate.

If, on the other hand, the hidden information is at least partly within the second information and thus on the display, the first information serves as a decoder, i. By overlaying with the first information, the hidden information becomes visible or readable. In this case, it is possible to display any second information matched to the first information on the display, so that either static or various varying or film-like information can be displayed in a specific area, but this information is not visible without the first information are legible. Preferably, it is also possible to display sequences of color changes of the metameric colors or migrating dark and light regions of the moire pattern.

The hidden information may also be located within the first and second information. In this case, the first information on the security element or the verification element is subdivided into two or more sub-areas, wherein a sub-area contains the information to be verified. holds. The second part to be verified is shown in the display and is arranged such that it is located next to the first part to be verified and does not overlap it or only insignificantly.

In a preferred embodiment of the invention, the at least one light-permeable region of the substrate is combined with a transparent or at least translucent further security feature. This further security feature is embodied in this case such that the hidden information of the invention, which is unrecognizable and / or readable by a viewer without aids, is not disturbed and therefore remains recognizable.

This further security feature consists in particular of a color with interference pigments or liquid crystals or of an optically variable thin-film layer, as is known, for example, from WO 2005/108110. An optically variable color with interference pigments in this case is, for example, a color with optically variable pigments which have at least one interference-capable, multilayer structure, as is known, for example, from DE 10 2006 062 281. As stated in DE 10 2006 062 281, these optically variable pigments can be changed with a laser in such a way that a different appearance results in transmitted light than in incident light. Another example of an optically variable color is a so-called iriodin color.

A color with liquid crystals or pigments of liquid crystals is known, for example, from WO 2006/018171 A2 mentioned in the introduction to the description. In particular, it has the property of displaying a different appearance or color in front of a dark or black background than in front of a light or white background. tergrund. Furthermore, it has the property that it does not appear regardless of the background under a certain viewing angle or angle range, the so-called glancing angle, in a certain color and under a different viewing angle or angle range.

The further security feature can be flat or structured, for example a flat pattern.

The further security feature can furthermore be designed so that it can be recognized with a specific aid, in the case of liquid-crystal paint or liquid-crystal pigments, for example with the aid of a polarization filter.

Particularly preferably, the further security feature correlates with the hidden information of the invention, which is unrecognizable and / or readable to a viewer without aids. Thus, the hidden information according to the invention, for example, represent the number "50" and the other security feature the word "EURO".

Furthermore, the additional security feature and the hidden information according to the invention can complement one another. For example, the additional security feature the lettering "EU" and hidden information according to the invention the lettering "RO" and thus together "EURO" represents.

Alternatively, the hidden information according to the invention is retrieved simultaneously as the further security feature by tilting by the substrate is tilted with the at least one transparent area. Likewise, the hidden information according to the invention simultaneously how the further security feature is verified by adding a polarizer to the print pattern as a supplement.

If the translucent region of the substrate of the security element or the verification element is a transparent or translucent plastic film, the plastic film can additionally be embodied as a polarization filter. Preferably, there is a contrast enhancement of the revealed hidden information in the form of the moire pattern or metamerism.

In addition, the translucent region of the substrate may also have a polarizing effect.

The display of the respectively current second information on the display or on the electronics controlling the display takes place via the Internet, by e-mail, in mobile phones also as SMS, or via exchangeable storage media such as memory cards, flash cards or CDs / DVDs.

A preferred application of the invention results, for example, in the proof of the ownership of a mobile device, such as a mobile phone. On an identification card as a verification element, first information is displayed in a light-transmitting area and an image with a second information is displayed on the mobile phone. If now the owner of the mobile phone puts the identification card on the display of the mobile phone, a hidden information is visible, for example, contains the name of the owner. Here, in a first alternative possibility, the hidden information in the first information on the identification card, which must be carried out so personalized to the owner. The second possibility is the hidden information on the display of the mobile phone, with the Identification card, for example, for all owners of mobile phones of the corresponding network operator or the corresponding manufacturer of the mobile phone is the same. Particularly preferably, the hidden information is stored on the SIM card of the owner or is generated via the personalized SIM card according to a specific method.

Another preferred application relates to lots having a profit functionality on which there is a translucent area, in particular a window with a first piece of information. The owner of the lot, for example, receives a second piece of information via SMS or e-mail, which he or she can display on the display of a mobile phone or a computer. The owner now holds the lot over the display and immediately determines whether the lot is a profit or a rivet. In this case, there are the two possibilities that, on the one hand, the hidden information is in the lot itself or, on the other hand, in the second information transmitted by SMS or e-mail. In the first case, the owner sends the lot to the initiator of the prize action as proof, in the second case the proof of the personalized SMS or e-mail is provided.

The advantages of the invention will be explained with reference to the following examples and additional figures. The described individual features and embodiments described below are inventive in their own right, but are also inventive in combination. The examples represent preferred embodiments, to which, however, the invention should not be limited in any way. The proportions shown in the figures do not correspond to the conditions present in reality and serve only to improve the clarity.

In detail, show schematically: 1 is a banknote with window and grid with a first information in supervision and / or review,

FIG. 2 shows a screen with a grid with a second information in it, FIG.

3 shows the screen of FIG. 2 and the banknote of FIG. 1 one above the other, FIG.

4 shows a mobile phone display with a grid with a second information in it,

5 shows the mobile phone display of FIG. 4 and the banknote of FIG. 1 one above the other, FIG.

Fig. 6 banknote with window and two hidden information from Moire pattern and metamerism within a first information in supervision or supervision and review,

7 shows the screen from FIG. 2 and the banknote from FIG. 6 one above the other, FIG.

8 is a planar geometry for a metameres color pair in supervision,

9 shows a screened geometry for a metameres color pair in supervision,

10 shows a valuable article or a verification element made of a substrate with a light-permeable region and a grid-like arranged first information on the front side in side view, 11 shows the object of value or the verification element from FIG. 10 with a grid on the rear side, exactly opposite the grid on the front side, FIG.

FIG. 12 shows the object of value or the verification element from FIG. 10 on the front side, partially overprinted with an optically variable color, FIG.

13 shows the valuable article or the verification element from FIG. 12 with a further optically variable color on the back side, FIG.

FIG. 14 shows the object of value or the verification element from FIG. 11 on the front and rear sides, each partially overprinted with an optically variable color, FIG.

15 shows the valuable article or the verification element from FIG. 12 with a part of the grid of opaque white and a part of a covering black color, FIG.

FIG. 16 shows the object of value or the verification element from FIG. 15, additionally with a grid of opaque white and a part of opaque black color on the back, overprinted with the optically variable color, FIG.

17 shows the valuable article or the verification element from FIG. 15, but with two different optically variable colors, FIG.

FIG. 18 shows the object of value or the verification element from FIG. 15 with a grid of a covering color in the back, FIG. FIG. 19 shows the object of value or the verification element from FIG. 10, the grid consisting of three-layer thin-film elements, FIG.

20 shows one of the valuables or the verification elements from FIGS. 15 to 18 in a plan view from the front or rear side, wherein the lines of the grid for opaque white and for the black color are carried out in bursts,

FIG. 21 shows one of the valuables or verification elements from FIGS. 16 and 17 in a plan view from that opposite FIG. 20

Page, where the lines of the grid for opaque white and for the black color are carried out shock to impact.

In the following, examples of different preferred embodiments of the invention will be explained with reference to the figures. The illustrations in the figures are highly schematized for better understanding and do not reflect the realities. For this purpose, the described embodiments are reduced for better clarity due to the essential core information. In the practical implementation significantly more complex patterns or images in single or multi-color printing can be used. The information presented in the following examples can also be replaced by arbitrarily complex image or text information.

The various embodiments are not limited to use in the form described, but can be combined to increase the effects with each other. A first embodiment relates to the verification of a banknote with a display of a computer. In Fig. 1, a banknote 1 is shown with a window 2, in which there is a grid with hidden information. The raster is formed, for example, by a line grid, in which the hidden information is formed by microscopically small dislocations of individual lines in a certain area of the line grid. The microscopic dislocations of individual lines are performed in such a way that they are not visible to the naked eye, their outline or outline containing alphanumeric or graphic information.

Fig. 2 shows a liquid crystal panel 3 of a computer. In a defined area of the screen 3 is a grid 5 with a second information. In addition, a template 4 is shown in screen 3, which is matched to the banknote 1. If, according to FIG. 3, the banknote 1 is placed on the screen 3 in such a way that it is arranged flush with its outline in the template, the grid 5 and the window 2 lie exactly above one another.

Here, the hidden information 6 in the window 2 of the banknote 1 is visible. The hidden information 6 in this case is illustratively the number "50", i.e. the denomination of the bill, but any other information may be hidden in the grid of the window 3, for example an alphanumeric character or a graphic image.

Particularly advantageously, the grid 5 consists of a film-like juxtaposition of different rasters, so that the hidden information 6 also results in a film-like sequence of different information, for example: - no information displayed in the form of a white field for one second,

- then the number "5" is displayed for one second,

- then the number "0" is displayed for one second,

- then the letter "T" is displayed for one second, - then the letter "A" is displayed for one second,

- then the letter "L" is displayed for one second,

- then the letter "E" is displayed for one second,

- then the letter "R" will be displayed for one second, after which the row will start from the beginning and the information "50 TALER" will be shown in succession.

In a second embodiment, instead of a computer screen, a screen of other stationary or mobile data processing and communication devices is used, as shown by way of example in FIGS. 4 and 5. In this case, the window 2 of the banknote 1 is placed over the display 7 of a mobile phone, wherein the grid 5 is shown in the display 7.

In a third exemplary embodiment, as shown in FIG. 6, in the window 8 of the banknote 1 there are two hidden pieces of information within a first piece of information, the first piece of information being formed by a line grid consisting of a first metameric color. The one hidden information 10 is formed by a phase shift of the line grid, wherein the outline of the phase shift yields the letter "L." The other hidden information 9 is formed by a change of the metameric color, so that together with the metameric color The outline information of the hidden information 9 results in the number "5". The banknote 1 is now placed according to the first embodiment of FIG. 2 on the display 3 with the grid 5. The grid 5 now shows the following second information in succession:

- a full color, a first color, e.g. the color white, in which no information is displayed in window 8 of the banknote,

- completely different color, e.g. the color red, in which in the window 8 of the banknote the hidden information 9 in the form of the number "5" is displayed,

- Whole area a second line grid, which is adapted to the line grid of the first information and combined results in a moire pattern, so that according to Fig. 7b in the window 8 of the bill, the hidden information 10 in the form of the letter "L" is displayed.

A fourth embodiment relates to the geometric arrangement of a metameric color pair in the window of a valuable item. According to FIG. 8, in a window 13 of a banknote 1, the background is printed with a first metameric color 11 and, in front of the background, a numeral "5" in a second metameric color 12.

Alternatively, as shown in Fig. 9, the information is printed as a dot pattern on the window, with a part 14 forming the background in a first metameric color and a part 15 forming the numeral "5" in a second metameric color individual dots is printed.

The following exemplary embodiments relate to specific embodiments of the valuable article or of the verification element.

10 shows a valuable article or a verification element made of a substrate 20 with a translucent region 21 in side view. Of the Translucent area 21 is formed by an opening or a hole in the substrate, which is covered with a transparent film 22. The film 22 may in this case be applied directly to the edge region of the hole in the substrate 20, as shown in FIG. 10, or to a depression in the edge region of the hole, so that the surface of the front side of the film 21 is flush with the surface of the substrate concludes. Alternatively, the film may also be embedded in the substrate, so that the substrate encloses the edge region of the film.

On the front side of the film, a first information is arranged in grid form, which consists of opaque pattern basic elements 23 of opaque white.

In addition, according to FIG. 11, a further grid of pattern base elements 24, which lie exactly opposite the pattern base elements 23 on the front side, can be arranged on the rear side of the foil 22. Particularly preferably, the pattern base elements 24 are made of opaque white or opaque colors, so that the opacity of the grid is enhanced in transparency. By tilting the object of value or the verification element arises here no additional Inf ormations change.

FIG. 12 shows the object of value or the verification element from FIG. 10, wherein the grid on the front side is at least partially covered by a transparent layer 25 with iriodin pigments and / or liquid-crystalline material, in particular cholesteric liquid-crystalline material.

Such a transparent layer 25 of liquid-crystalline material, in particular of cholesteric liquid-crystalline material, is known, for example, from WO 2006/018171 A2 mentioned in the introduction to the description. known, the disclosure of which is fully incorporated in this invention in this regard. This transparent layer has the property of showing a different appearance from a light or white background than a dark or black background. Thus, against a white background, the transparent layer 25 does not show any further information, since the white background and the pattern primitives 23 of opaque white have a similar and preferably the same hue. In particular, the pattern base elements 23 are designed so small in their lateral extent that they are not visible to a viewer. However, in front of a dark or black background, the valuable article or the verification element shows, as further information, the outline shape of the transparent layer 25. The further information may preferably include an alphanumeric text, a graphic, a barcode, a pictorial representation, such as the image of a person, or represent any pattern.

However, the further information can be recognized not only over dark or black background, but also by tilting the valuables or the verification element, regardless of the background. Thus a viewer sees the further information also against a white background under a certain angle range, the so-called gloss angle.

In an exemplary embodiment according to FIG. 13, the valuable article or the verification element from FIG. 12 can also be provided on the rear side with a further transparent layer 26 with iriodin pigments and / or liquid-crystal material, which for example also extends beyond the edge of the opening in FIG Substrate 20 can protrude. Thus, the viewer also recognizes from the back of the object of value or the verification element, further information that the further information on the front te or another information. If the transparent layer 26 projects beyond the edge of the opening in the substrate 20, further information or supplementary information preferably results.

To increase the opacity of the grid in review can according to

Fig. 14 between the film 22 and the transparent layer 26 as shown in FIG. 11, another grid of pattern base elements 24 may be arranged, which lie exactly opposite the pattern base elements 23 on the front side.

FIG. 15 shows the object of value or the verification element from FIG. 12, wherein a part of the grid of opaque white 23 and a part of opaque black color 27 are made. In this case, the same effect as shown in FIG. 12 results for an observer in view. However, in plan view the information of the raster elements executed with black color 27 is shown. The information of the transparent layer 25 is shown at a tilt angle. The part of the grid executed in opaque white 23 can not be seen in a transparent view.

FIG. 16 shows the valuable article or the verification element from FIG. 15, with a grid of opaque white and a part of opaque black paint additionally being arranged on the reverse side. The opaque white on the front covers the information of the black color on the back and vice versa. This makes it possible to display different information that can be seen in supervision on the front and back. In addition, the grid on the back can be overprinted with a transparent layer 25. If the same information is displayed on both sides of the film 22, the same further information is shown on both sides of the valuable article or of the verification element in each case in the correct direction.

Alternatively, as shown in Fig. 17, the reverse side is printed with a transparent layer 26 different from the transparent layer of the front side, so that the color impression of the other information on the front side is different from that on the back side.

FIG. 18 additionally shows the object of value or the verification element from FIG. 15 with a grid of opaque white 24 and a covering chromatic color 29 on the rear side. For the observer, on the back side, additional information is provided by the covering color without the information to be verified by means of the display being disturbed.

Alternatively, the first information from FIG. 10 may also consist of grid-like, at least three-layered thin-film elements, as shown in FIG. When the object of value or the verification element is tilted, the color of the thin-film element changes, for example, from green to magenta.

FIG. 20 shows one of the valuables or the verification elements from FIGS. 15 to 18 in a plan view from the front or rear side, wherein the lines of the grid for opaque white 23 and for the black color 27 are executed abuttingly.

FIG. 21 shows one of the valuables or the verification elements from FIGS. 16 and 17 in a plan view from that opposite FIG. 20 Page, where the lines of the grid for opaque white 24 and for the black color 28 are executed in bursts.

Alternatively, it is also possible to use on the front and / or back instead of black color a covering color.

In general, of course, instead of a line grid, for example, a dot matrix can be used.

In addition, in Figures 12 to 21, in particular, the visually-visible information may protrude beyond the translucent area 21 to represent further information or supplementary information.

Claims

Patent claims

1. A method for verification of value documents, such as banknotes, Ausweisiskarten, payment cards, tickets, tickets or the like, the

Substrate having at least one light-transmissive region, wherein in at least one light-transmissive region of the substrate, a first information is arranged, characterized in that

- A separate display is used, - At least partially a second information is displayed by the separate display _. that correlates with the first information,

- in the first and / or second information another, unrecognizable to a viewer without aids and / or readable information is hidden, - the substrate is placed with its first information about the second information displayed on the separate display,

- And the hidden information in transmitted light as Moirέ pattern and / or metamerism is recognizable and / or readable.

2. A method for verifying or verifying valuables having a display characterized by

a separate verification element which has at least one substrate with at least one light-transmissive region, a first information being arranged in at least one light-permeable region of the substrate,

wherein a second information is displayed by the display at least regionally, which correlates with the first information, - in the first and / or second information another, for a viewer without aids unrecognizable and / or readable information is hidden,

- the substrate is placed with its first information about the second information shown on the display, and

- The hidden information in transmitted light as a moire pattern and / or as metamerism is recognizable and / or readable.

3. The method of claim 1 or I _1, characterized in that the first and second information is formed by a grid.

4. The method according to claim 3, characterized in that the grid is formed by a uniform or non-uniform distribution of pattern primitives at least in a region of the substrate and the display, wherein the individual pattern primitives are spaced from each other.

5. The method according to at least one of the preceding claims, characterized in that on at least one transparent area of the security element, a grid of scattering or lenticular elements is applied and on the display a visually unreadable and / or visible and matched to the lens structure micro-information is pictured.

6. The method according to at least one of claims 1 to 4, characterized in that on the translucent area in the security element, a line or dot-shaped grid is applied and on the display a visually not visible and matched to the line or dot grid raster information is shown.

7. The method according to claim 1 or 2, characterized in that the first information is formed by at least two metameric colors.

8. The method according to claim 7, characterized in that the at least two metameric colors produce a same color impression in a first wavelength range and light is emitted by the display as second information in at least one second wavelength range, wherein the at least two metameric colors at least two different Create color impressions.

9. The method according to claim 7, characterized in that the at least two metameric colors generate at least two different color impressions in a first wavelength range and light is emitted by the display as second information in at least one second wavelength range, wherein the at least two metameric colors have the same Create color impression.

10. The method according to any one of claims 8 and 9, characterized in that light is emitted by the display alternately different wavelength as the second information.

11. The method according to any one of claims 8 to 10, characterized in that the metameric colors or the metameric ink pairs have a comparable transparency, which contain as possible opaque pigments and / or opaque fillers, such as TiO ₂ .

12. The method according to at least one of the preceding claims, characterized in that the second information on the display static or regularly or irregularly alternately displayed and / or played as a movie sequence on the display.

13. The method according to at least one of the preceding claims, character- ized in that the second information is transmitted via the Internet, as an e-mail, as SMS or via analog or digital storage media on the display.

14. The method according to at least one of the preceding claims, character- ized in that at least one light-transmissive region of the substrate is formed by a transparent window.

15. The method according to at least one of the preceding claims, characterized in that the at least one light-transmissive region of the substrate is combined with a transparent or at least translucent further security feature.

16. An apparatus for performing the method according to at least one of claims 1 and 3 to 15, characterized in that the display is a screen of a computer, a notebook or a laptop, a

Monitor a cash register of a cash register system or a display of a hand-held device is.

17. Device for carrying out the method according to at least one of claims 2 to 15, characterized in that the valuable item with display is a computer, a notebook or a laptop, a cash register of a cash register system or a handheld device.