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WO2008104025A1 - Détecteur d'authenticité et procédés de détection de documents authentiques - Google Patents

Détecteur d'authenticité et procédés de détection de documents authentiques Download PDF

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Publication number
WO2008104025A1
WO2008104025A1 PCT/AU2008/000256 AU2008000256W WO2008104025A1 WO 2008104025 A1 WO2008104025 A1 WO 2008104025A1 AU 2008000256 W AU2008000256 W AU 2008000256W WO 2008104025 A1 WO2008104025 A1 WO 2008104025A1
Authority
WO
WIPO (PCT)
Prior art keywords
markings
detector
lines
document
genuine
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.)
Ceased
Application number
PCT/AU2008/000256
Other languages
English (en)
Inventor
Barry David Walters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2007901004A external-priority patent/AU2007901004A0/en
Application filed by Individual filed Critical Individual
Publication of WO2008104025A1 publication Critical patent/WO2008104025A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/342—Moiré effects
    • 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
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns

Definitions

  • the present invention relates generally to a device for use in ascertaining the authenticity of a document and to methods of detecting the authenticity of documents .
  • the present invention relates to a detector for detecting whether or not a security document having a multitude of closely spaced apart lines, such as for example, a bank note is likely to be genuine and to methods of using the detector to determine whether the security document is likely to be genuine by moving the authentication detector over at least a part of the surface of the security document to produce an observable or visual indication of the authenticity of the security document .
  • the present invention has particular application as an authentication detector having markings in the form of a pattern of closely spaced apart lines which interact with the markings in the form of closely spaced apart lines of a bank note to produce a visual indication to determine whether there is a high probability of the bank note being authentic .
  • Counterfeiting of documents, particularly security documents, such as for example, bank notes is wide spread and is becoming an even more serious problem, particularly in countries having a less sophisticated banking system and/or security document checking systems, such as for example, countries having an emerging economy or an emerging tourist industry.
  • One of the causes of the rise in counterfeiting or in the illegal production of unauthorised documents, particularly bogus bank notes is the availability of high quality and low priced colour photocopiers, printers and desktop publishing systems including software and the availability of replication devices such as CD and DVD burners and the like which can be used either singly or in combination to produce unauthorised copies of an original security product, including bank notes, or original valuable product.
  • bank note is one of the most abused bank notes in the world, prone to illicit reproduction and replication.
  • a device that can be used by travellers and others to detect counterfeit bank notes, particularly bank notes using old technology of print upon paper without modern anti-counterfeiting items being incorporated into the bank note .
  • Another detector device is a pen, which contains an iodine solution that reacts with the starch in wood-based paper to create a black stain.
  • a yellow/gold mark occurs.
  • Such pens do nothing except detect bills printed on normal copier paper instead of the fine papers used by the U.S. Treasury.
  • This device is reasonably effective with amateurish attempts at fraud, but if the counterfeiter buys a higher quality "linen" paper, from an arthouse for example, then the pen will fail to detect any fraudulent note.
  • the "ink” can dry up, spill and stain clothes, papers and similar, all of which make the pen inconvenient to use.
  • UV Ultraviolet Light
  • the smart counterfeiter can replicate the presence of the UV effect using an inkjet filled with UV ink.
  • these units are generally mains powered and therefore not conveniently portable.
  • the small key-ring pocket LED UV lights sometimes used to reveal the UV ink are difficult to use in daylight. They also require batteries for operation which need replacement when the existing batteries lose their charge, and such devices can be destroyed if wet.
  • embodiments of the invention do not necessarily have to satisfy all of the aims of the invention. Some embodiments will satisfy one aim whilst other embodiments will satisfy another aim. Some embodiments can satisfy two or more aims.
  • an authentication device or detector for determining the authenticity of a document, or a detector for providing an indication of the authenticity of a document, said device having a first set of markings arranged to extend in a first orientation or first pattern or first arrangement or layout, said first set of markings capable of interacting with at least a part of the document being checked for authenticity, said document when genuine, having one or more parts provided with a second set of markings arranged in a second direction or second pattern or a second arrangement or layout, wherein when the first set of markings of the detector is aligned with the genuine document the first set of markings interact with the second set of markings to produce a visual indication of the authenticity of the document thereby providing a general visual indication of the authenticity of the document.
  • a method of establishing the authenticity of a document using an authentication device having a first set of markings arranged in a first pattern or orientation comprising the steps of aligning the detector device with a part of the document being checked for authenticity, said document, if genuine, having a second set of markings arranged in a second direction or second orientation, said first set of markings for interaction with second set of markings to produce a visual indication from the combination of first and second markings, moving the detector device to orientate the first set of markings with respect to the second set of markings to produce the visual indication from interaction of the first and second set of markings thereby establishing a general visual indication of the authenticity of the document.
  • the document is a security document having or representing a value, such as for example, a security document that is, or is equivalent to, or can be exchanged for, or represents or be used as a substitute for a currency, cash or the like.
  • the document is a bank note, particularly a bank note having printing of a closely spaced apart pattern, particularly closely spaced apart lines such as a printed bank note, provided the bank note is genuine.
  • the document may be any document having a part of one of its surfaces that can be authenticated by the production of a visual indicator, such as for example, a moire pattern when used with a suitable detector.
  • security documents include bank notes, cheques, credit cards, travellers cheques, identity cards, passports, travel documents, packaging, or other high value products such as CD's, DVD's, computer software, pharmaceuticals, or the like.
  • the detector device of the present invention includes a backing material or carrier material and a marking layer or marking portion having the first set of markings in the first orientation or pattern.
  • the backing material is a layer of plastics material, including a transparent or clear plastic layer, substrate, sheet, panel or similar. More typically, the backing material is rigid, semi-rigid, flexible, semi- flexible or a combination of materials.
  • the markings are provided on or in the backing material whereas in other forms there is a separate portion, typically in the form of a layer combined with a backing material.
  • the layer having the markings is a clear, transparent sheet or panel adhered to the backing material.
  • the detector is provided with one or more windows having markings, preferably, two windows, one dedicated for use with bank notes of United States currency, i.e. U.S. dollars, and the other for use with other international currencies.
  • the markings in the two windows may be the same or may be different.
  • the markings of the first window are essentially constant or the same over the area of the window whereas the markings in the other window i.e. the international window, are variable ranging from a coarse marking pattern to a fine or very fine marking pattern within the one set of markings .
  • the markings are provided on the backing material or layer by "printing” or similar.
  • printing is not limited to traditional printing processes, such as for example, the deposition of ink on a substrate, but rather is broader in scope to encompass any process allowing the creation of a pattern of markings or the transfer of a pattern on a substrate, including engraving, photolithography, light exposition of photo- sensitive media, etching, perforating, embossing, thermoplastic recording, foil transfer, inkjet, dye- sublimation, applying transfer or the like.
  • the authentication detector of the present invention is in the form of a portable detector, such as for example, a credit-card sized device that can be kept by a person in a purse, wallet, money pouch, or the like.
  • the detector device is a mounted device located within a frame, holder or similar, such as for example, being capable of being mounted on the counter, bench, desk, table top or similar of a shop, office, bank, bureau, kiosk or the like. Both forms of the detector device are provided with one or more windows through which the security document can be observed. The window or windows, are provided with examples of different patterns forming the first set of markings .
  • the markings are located on one side of the detector device whereas in other forms the markings are located on both sides of the detector, including being located on the obverse face and/or the reverse face.
  • the detector has one set of markings or one pattern of markings whereas in other forms there are two or more sets of markings, patterns or the like, including multiple arrangements of markings .
  • there are multiple panels of the same markings whereas in other embodiments there are multiple panels of different markings located at different parts of the detector or over different parts of the surface of the detector.
  • the markings are provided on a sheet which is applied to one side of the detector, such as for example, a transfer, layer or the like.
  • the detector is of a laminate structure comprising three or more layers in which there is a inner layer sandwiched between two outer layers, one on either side of the inner layer.
  • the inner layer is provided with the markings.
  • the outer layers provide protection for the inner layer to protect and/or preserve the markings .
  • the detector is provided with a set of first markings which are provided on the detector and are referred to as reveal markings for revealing the production of the moire patterns in combination with the second set of markings in the form of lines printed or otherwise produced on the security document, such as the fine lines on a bank note which are referred to as the base layer and are an example of the second set of markings .
  • the markings on the detection device, provided in the transparent window of the device, to form the moire inducing pattern in combination with the security document may be formed by any convenient printing, embossing, or engraving process and may be carried in or on the window.
  • Printing responsible for the production of moire patterns include sets of fine closely spaced apart lines which are printed on security documents, including bank notes, that produce optically variable effects when viewed with other sets of fine closely spaced apart lines, such as when one pattern is superposed on another pattern of lines. At least two sets of markings of closely spaced apart lines are required to produce a moire pattern.
  • the present invention relies on the generation of moire patterns including moire fringes by using the markings or revealing layer of the detector in which the revealing layer comprises a revealing line grating or similar being superposed over the markings of the base layer made from base band patterns or similar printed onto the security document.
  • the presence of the moire pattern indicates that it is more likely than not that the document is genuine owing to the interaction of the two sets of markings. If the base layer of markings is not present, such as for example, if a genuine bank note has been merely photocopied, there would be no markings present on the bank note to interact with the revealing layer so that the moire pattern would not be produced.
  • the intention of using the detector device of the present invention is not necessarily to provide a 100% absolute fool proof guarantee of accuracy of authenticity and to detect a counterfeit bank note with 100% accuracy, but rather the purpose of using the detector device of the present invention is to provide a general visual indication that the document is probably more authentic than it is counterfeit if the moire pattern is produced more in the way of a screening application, or monitoring process to provide a visual indication that the document is most probably authentic which detector can be used in the "field" or where the transaction occurs, such as for example, at the money changers establishment, shop, kiosk, or at a market, stall, shop or the like when receiving change from a purchase in a foreign country or the like.
  • the detector device contains a revealing layer.
  • the revealing layer is made from or incorporates a grating.
  • the grating may take any suitable form, direction or orientation.
  • the spacing of the lines can be uniform it is preferred that the spacing of the lines forming the grating are non-uniform. More preferably, the lines forming the grating are either divergent or convergent including combinations of some lines being divergent whilst others are convergent forming a non-uniform pattern.
  • the lines can be parallel or non-parallel.
  • the pattern formed by the lines is curved, such as by being parabolic, quadric, asymptotic, hyperbolic, quadratic, circular, elliptical, star-shaped or any other suitable shape.
  • the lines can be continuous or discontinuous .
  • the lines with the grating of the authentication device of the present invention extend in one direction whilst other lines extend in a different direction.
  • Bank notes generally are provided with a security item in the form of a second set of markings having the second orientation or pattern which includes a number of lines forming the base layer or base band of lines.
  • a security item in the form of a second set of markings having the second orientation or pattern which includes a number of lines forming the base layer or base band of lines.
  • document refers to a range of products including printed articles, such as but not limited to, bank notes, passports, identity cards, credit cards, travellers cheques, labels, optical discs, CD's, DVD's, software, packages of medical drugs, pharmaceuticals or other small but high value produce and the like.
  • the visual indication of the present invention in a pattern of alternating shading of zones, areas, regions or the like of different density, intensity, or the like.
  • the visual indication is a pattern of bands of differing intensities of shade or tone are in alternating relationship.
  • the visual indication is a series of alternating bands or a pattern of alternating bands.
  • the visual indication is a moire patterns or a moire-like pattern of bands of similar width or thickness but having different colour, hue, tone, shading or the like forming a striped or zebra- like appearance of alternating light and dark bands.
  • each of the lines forming the grating of the authentication device has a thickness of from about 0.01 to about 0.2 mm, preferably from about 0.05 to about 0.1 mm. In other embodiments the thickness of the lines is variable as well as the spacing of the lines being variable.
  • lines per millimetre there are from about 1 to 20 lines per millimetre, more typically from about 2 to 10 lines per millimetre, most typically from about 4 to 8 lines per millimetre.
  • lines per centimetre there are about 40 to 60 lines per centimetre with variable numbers of lines at different parts of the surface of the detector, such as for example, 60 lines per cm at the edges and 40 lines per cm at the centre, depending upon the actual shapes defined by the lines.
  • the lines in the authentication device are spaced from about 50 to 200 lines per inch, more typically 80 to 150 lines per inch.
  • the lines are arranged at angles to one another, such as for example, some lines could be arranged at right angles to each other whilst others are arranged at 45 degrees to one another and still others arranged at other angles with respect to each other, such as for example, at 30°, 60° or the like.
  • the lines forming the grating on the authentication device are straight, curved, or combinations of straight and curved. More typically, the lines can form patterns or shapes, such as for example, a circular shape, an elliptical shape, an I-shape, a polygonal shape such as an octagon shape, a rounded concentric octagonal shape, a hexagon shape, a star shape, or the like.
  • One particularly preferred form of the detector of the present invention is provided with a design of the markings which is a combination of four different patterns set at 0°, 45°, 90° and 135° respectively, forming a cross or star arrangement thus minimising the amount that the detector needs to be rotated to achieve the correct moire pattern.
  • the spacing patterns and arrangement of lines forming the grid of the authentication device are as diverse as possible to be able to accommodate the wide variation in spacing, type, pattern and configuration of the lines of a bank note, such as for example, currency from many different countries having different sizes with different decorations and the like.
  • the device is provided with panels, in which the spacing, thickness and shape of the pattern are different from each other in different panels to provide greater versatility of application of the detector.
  • the detector device of the present invention may need to be translated and/or rotated, sometimes up to about 360° in order for the moire pattern, if produced by the authentic bank note, to be observed thereby indicating that the bank note is probably genuine .
  • the detector device of the present invention comprises a film or transparent sheet with fine lines printed on it which are curved, parallel or non-parallel, which when placed over a graphic or bank note shows a moire pattern if the document or bank note has been printed with fine lines on it through an engraved plate process thereby providing a general visual indication of the authenticity of the bank note.
  • the device has a series of fine lines which generally, but not exclusively, have a line spacing with varies from about 80 lines per inch to about 150 lines per inch arranged in such a way that this variance in line rulings is achieved within 8 cm i.e. within the size of a usual credit-card.
  • line rulings is achieved within 8 cm i.e. within the size of a usual credit-card.
  • other variants in size over a larger distance are possible for use in stand alone merchant environments with or without additional lighting devices for ease of visibility.
  • a bank note may have fine lines set at 110 lines per inch when the device is placed over that area of the note, a moire pattern is visible.
  • the section of the device being used has a section in which the line spacing is 120 lines per inch
  • a moire pattern of 10 lines per inch will be generated.
  • By moving the device over the note/document a variety of patterns are produced, which asymptote at the actual line ruling of the note/document. This does not occur with counterfeit replicates which can be deceptively generated with commonplace scanner printers.
  • the use of the device of the present invention allows a person to determine whether the note/document being examined is real or counterfeit in most instances .
  • Figure 1 is a schematic front view of one form of the detector of the present invention being in the form of a desk top model mounted in a frame.
  • Figure 2 (a) is a schematic front view of one form of the detector of the present invention in the form of a portable credit card sized device showing a non-genuine bank note being detected by the absence of a moire pattern.
  • Figure 2 (b) is a is a schematic front view of one form of the detector of the present invention in the form of a portable credit card sized device showing a probably genuine bank note being detected by the presence of a moire pattern.
  • Figure 3 is a view of one form of the pattern of markings applied to one form of the authentication device of the present invention showing different line spacings of 0.05mm, 0.08mm and 0.10mm, respectively.
  • Figure 4a is a schematic front view of another form of the detector of the present invention showing a generally circular pattern of line spacing.
  • Figure 4b is a schematic front view of another form of the detector of the present invention showing a pattern of divergent and convergent lines.
  • Figure 5 is a schematic view of one form of the use of a barcode scanner to detect counterfeit documents.
  • Figure 6a is a schematic view of the use of the detector with a scanner for detecting a genuine document.
  • Figure 6b is a schematic view of the result of the use of a scanner for detecting a counterfeit document.
  • This form of the detector device is in the form of a mounted detector device having a frame 10 around the perimeter of device 2.
  • frame 10 is rectangular having two longitudinal edges 12a, 12b and two transverse edges 14a, 14b.
  • frame 10 can have any suitable or convenient shape.
  • a window 16 is formed internally within frame 10.
  • the front of window 16 located between the edges 12a, 12b, 14a, 14b of frame 10 is transparent.
  • Window 16 forms the detecting part of detector device 2 of the present invention.
  • the front face of window 16 is provided with a clear plastic sheet having a first set of markings arranged in a desired pattern comprising a multitude of lines 18, extending in a uniform or a non-uniform pattern. The patterns will be described in detail later in this specification.
  • the exact form of the markings can be variable.
  • a security document in the form of a bank note 20 is locatable under or behind window 16 between edges 12a, 12b, 14b to determine the authenticity of bank note 20.
  • a variable pattern of markings on the window is used to create a revealing window.
  • the revealing window is window 16 of Figure 1.
  • Revealing window 16 of one form of the mounted device of the present invention is 85mm in length x 55mm in width (Credit Card sized) laminated to a clear plastic plate 100mm x 100mm.
  • Printed directly onto the transparent revealing window 16 is an array of numerous fine black lines, typically 0.08mm in width with depth of a few microns, running continuously across the width (85mm) of the window.
  • the lines 18 in this example are not parallel but instead are spaced such that in the centre of revealing window 16, the spacing is 4 lines per mm while at the edges the spacing is 8 lines per mm.
  • a bilinear array is used as shown more particularly in Figure 4b. It is to be noted that there are many other arrangements or patterns of lines 18 that can produce the same result.
  • the lines 18 are arranged in a series of concentric circles or ellipses in the form where the distance between lines decreases linearly towards the perimeter as shown particularly in figure 4a.
  • the inverse patterns of the above described or other patterns of markings could also be used, i.e. 8 lines per mm in the centre and 4 lines per mm toward the perimeter.
  • the mounted detector 2 is a frame 10 to which is affixed the revealing window 16, mounted such that hands free operation of detecting the authenticity of bank note 20 is achieved.
  • a vertical base is provided at the rear of device 2.
  • the base can be used to screw device 2 to a wall, cash register or other fitting or solid substrate.
  • the base acts to incline device 2 for easier access and viewing when device 2 is simply used on a flat surface such as a bench, table top, counter or the like.
  • edge 12a, 12b, 14a, 14b of frame 10 in the opaque area around edges 12a, 12b, 14a, 14b of frame 10 are marked axes to reference specific areas of the active window 16 of device 2, in which certain patterns will occur when the markings 18 of reveal window 16 interact with specific areas on various bank notes.
  • One form of the reference applied to the axes of device 2 in the edges of the frame is shown more particularly in Figures 4a and 4b.
  • Alignment marks are also provided around the edge of frame 10 in some embodiments to allow optimum co-alignment between the fine line array of the markings of the reveal window of the device of the present invention and the fine line security markings present in a genuine bank note. It is to be noted that the fine line markings of the bank note vary depending on which type of bank note is being examined, such as the denomination of the bank note and the country issuing the bank note.
  • the mounted detector 2 is provided with a slot 22 located at or towards the sides of frame 10 for receiving bank note 20 therethrough allowing the bank note to be viewed through the front window 16 of device 2.
  • the mounted device is not provided with a slot, but rather the operator simply holds bank note 20 to be examined beneath revealing window 16 translating and rotating the bank note 20 until the moire pattern is detected or not. If the bank note is genuine a moire pattern is produced thus providing a subjective qualitative visual indication of the authenticity of the bank note with a reasonable probability. If no moire pattern is observed the bank note is moved randomly, such as for example, being rotated and/or translated in any combination of movements. If this movement of the bank note produces a moire pattern, the bank note is probably genuine.
  • Instructions to use the detector and how to interpret the results are provided optionally on the frame, preferably on the front face window of the frame or around the edges of the frame.
  • One example of instructions is shown in Figure 1.
  • the form of the detector device 4 shown in Figures 2 (a) and 2 (b) is the portable, transportable form, easily carried in the purse, wallet, money belt or similar for use away from an office, shop, kiosk or the like.
  • This form is about the same shape and size as a credit card and is provided with an opaque outer portion in the form of a frame 10 having two longitudinal edges 12a, 12b and two transverse edges 14a, 14b and a transparent inner portion in the form of a window 16 having markings 18.
  • Detector device 4 is placed upon bank note 20 suspected of being counterfeited with window 16 having the first set of markings 18 superposed over a portion of the bank note having a second set of markings consisting of a multitude of very fine closely spaced apart lines.
  • Detector 4 is moved over the surface of bank note 20 in an attempt to produce a moire pattern between the two sets of markings. If the bank note is non genuine, such as for example, is merely a good quality colour photocopy, no moire pattern will be produced in the window of the detector as shown in Figure 2 (a) where no moire pattern is produced in the region of the head depicted on the bank note and hence this bank note can be rejected in favour of another bank note. If a moire pattern 24 is produced as shown in Figure 2 (b) shown by the series of shading or bands of light and dark in the region around the head of the person depicted on the bank note, it is most probable, but not absolutely certain, that the bank note is genuine, and hence this bank note can be accepted with greater confidence that it is in fact genuine. If necessary, the detector can be moved over different parts of the bank note in an attempt to produce a moire pattern. If moire patters are produced in a number of different regions of the bank note, the person has increased confidence that the bank note is genuine.
  • the small portable detector of the present invention can be used in the field as a screening device in an attempt to detect non genuine bank notes thereby ensuring a much greater chance of the person receiving authentic bank notes and the like, or at least having a reason for rejecting suspect bank notes.
  • the revealing window of the current mounted device is 85mm in length x 55mm in width (Credit Card sized) laminated on a clear plastic stock of the same size.
  • Printed directly onto the transparent revealing window is an array of numerous fine black lines, 0.08mm in width with depth of a few microns, running continuously across the width (85mm) of the window.
  • the lines in this example are not parallel but instead are spaced such that in the centre of the revealing window the spacing is 4 lines per mm while at the edges the spacing is 8 lines per mm. There are several arrangements that can give this result. In this particular example a bilinear array is used as shown more particularly in e figure 4b.
  • the credit card format is easy to use and a convenient shape for portability.
  • This embodiment involves the use of a thin film forming the window of the detector device acting as an optical filter for use with barcode scanning equipment .
  • a scanning laser device 40 located at a suitable location, such as for example, under the counter of a shop or other retail establishment, for emitting a laser beam 42.
  • the laser beam is for reading the barcode of a product to identify the product.
  • the barcode reader system is modified to be a counterfeit detector.
  • the barcode reader system is modified by providing a thin film 44, located at a suitable location, such as for example on the bench top, counter or similar above the laser scanner 40 where there is a transparent panel 46 or similar upon which the goods having the barcode are placed for reading by the barcode reader system.
  • the thin film 44 in one form is a transparent window having fine line markings, similar to the windows of the previously described detectors 2, 4.
  • the thin film when placed on the transparent panel, acts as a filter for the laser beam emitted from the scanning laser 40 as part of the barcode reader system.
  • thin film 44 is provided with a white section or quiet zone 52 on each side of and/or around its border to enable the barcode reader to identify the orientation of any product, including the suspect bank note placed on the thin film.
  • a suitable detector 48 for identifying the barcode associated with the product or produced by the bank note is provided at a suitable location for receiving the laser beam after passing through thin film 44 and thus identifying whether the suspect note is genuine or not.
  • the thin film 44 for use in detecting counterfeit bank notes 20 can be incorporated as a clear film acting as an optical filter with existing barcode scanning equipment typical of the type used at retail point of sale (POS) checkouts or the detector in the form of the optical filter can be built into new models of barcode reader devices and systems.
  • POS point of sale
  • a bank note 20 is placed flush with and in close contact with thin film 44 located on the transparent panel of the scanning equipment.
  • the barcode scanner will read a genuine bank note as having the code "838383838” whereas the barcode scanner will read a non-genuine bank note as having the code « 989898989", thus quickly and easily differentiating between genuine and counterfeit bank notes.
  • the difference in barcodes being generated can be used to trigger an alarm or other warning or alerting system to warn that the bank note is not genuine.
  • the simple incorporation of a film having markings acting as an optical filter in accordance with the present invention into existing scanning equipment will enable the scanning equipment to quickly and conveniently identify counterfeit bank notes from real bank notes, using existing scanning equipment .
  • scanning equipment requires a white section each side and around the border of the barcode, these are called “Quiet” zones which help orientate and correctly align the scanning equipment to read the barcode accurately.
  • the film is provided with a small white panel 52 each side of the active area so the scanning equipment will "see” these "quiet” zones, recognise the generated pattern as a barcode and orientate to the correct position to be able to read the barcode.
  • FIGs 6a and 6b One example of the "quiet" zone is shown in Figures 6a and 6b which forms part of the thin film 44 acting as the optical filter. If the bank note is genuine, a moire pattern is formed, as shown in Figure 6a where the numeral "1" located within the region 50 boarded by the quiet zone 52 produces the alternating light and dark bands of the moire pattern, which is ascribed barcode "8383838", which the scanning equipment has been programmed to accept as being genuine.
  • the modified barcode reading equipment can be fixed equipment of the type installed in retail establishments such as at point of sale, or the modified equipment having the thin film optical filter can be a hand held device, or incorporated into a hand held device or the like, including hand held barcode scanners and other electro-optical devices.
  • the detector device of the present invention attempts to address the problem of receiving counterfeit or non genuine bank notes or other security documents directly at the point of sale (POS) by providing a device which is simple to use, passive i.e. requires no electronics or energy source, and relies only on available light, by detecting the difference in the moire patterns produced by notes created with the legitimate engraved plate process as compared to bank notes fraudulently reproduced with an ink dot array as in the case of inkjet and laser printers.
  • the detector device is not designed to detect sophisticated bank notes produced with a high level of technology, such as for example, bank notes that have been produced for example by countries having a different ideology to undermine the USA economy, but instead to identify those produced by low cost methods of an ambitious tourist or other individuals scamming the system. It is to be noted that this later case represents the majority of fraud perpetrated currently in respect of security documents that are equivalent to, can be exchanged for or represent cash or a negotiable bill or instrument.
  • the device is also available in credit card sized rendition allowing tourists and others to check the validity of notes received as change from cash transactions.
  • the device is used in such a way that the special film having the markings (the basis of the device) interacts by generating a pattern if the note is legitimate, but fails to generate any pattern where the note consists of a dot array such as in a fraudulent copy.
  • the production cost of the device is extremely low. It is compact, so advantage can be taken of mail order delivery, with low post and packaging costs.
  • the device has room around its edge for appropriate corporate branding or other indicia if required.
  • the benefit to the consumer is that if a single counterfeit bill, usually $50 or $100, is detected by the device at the Point of Sale then the device has immediately adequately paid for itself, and is able to be used to avoid legal implications and the delayed loss through later identification or detection. It is simple to use and requires no specialist training.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

L'invention concerne un dispositif d'authentification présentant une fenêtre avec des repères, typiquement sous la forme de fines lignes très rapprochées les unes des autres formant une fenêtre d'encadrement donnant une indication visuelle sur l'authenticité d'un document contrôlé par le dispositif d'authentification. Le dispositif d'authentification fonctionne avec un premier groupe de repères qui interagissent en coopérant avec les marquages d'un document de sécurité authentique afin de donner une indication visuelle, par exemple un dessin moiré, permettant de déterminer si le document de sécurité suspect est un faux ou non. La présente invention trouve notamment application sous forme de dispositif d'authentification de la taille d'une carte de crédit qui peut être employé pour déterminer rapidement qu'un billet donné à son bénéficiaire est probablement authentique, en produisant un dessin moiré, ou qu'il est probablement faux, en ne produisant pas d'indication visuelle, en particulier un dessin moiré, lorsqu'il est contrôlé par le dispositif d'authentification.
PCT/AU2008/000256 2007-02-27 2008-02-27 Détecteur d'authenticité et procédés de détection de documents authentiques Ceased WO2008104025A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2007901004A AU2007901004A0 (en) 2007-02-27 Authentication detector and methods of detecting authentic documents
AU2007901004 2007-02-27

Publications (1)

Publication Number Publication Date
WO2008104025A1 true WO2008104025A1 (fr) 2008-09-04

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Application Number Title Priority Date Filing Date
PCT/AU2008/000256 Ceased WO2008104025A1 (fr) 2007-02-27 2008-02-27 Détecteur d'authenticité et procédés de détection de documents authentiques

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Country Link
WO (1) WO2008104025A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011094221A3 (fr) * 2010-01-26 2011-11-17 Nanoink, Inc. Motifs de moiré générés par éclairage angulaire de surfaces
US20240012941A1 (en) * 2022-07-07 2024-01-11 Versa Networks, Inc. User interface (ui) for a remote browser isolation (rbi) protected browser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434907A (en) * 1972-08-09 1976-05-12 Deep Print Projects Ltd Security apparatus
WO1999026793A1 (fr) * 1997-11-19 1999-06-03 Securency Pty. Ltd. Dispositif de securite moire
US20040076310A1 (en) * 2002-10-16 2004-04-22 Hersch Roger D. Authentication of documents and articles by moire patterns

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434907A (en) * 1972-08-09 1976-05-12 Deep Print Projects Ltd Security apparatus
WO1999026793A1 (fr) * 1997-11-19 1999-06-03 Securency Pty. Ltd. Dispositif de securite moire
US20040076310A1 (en) * 2002-10-16 2004-04-22 Hersch Roger D. Authentication of documents and articles by moire patterns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011094221A3 (fr) * 2010-01-26 2011-11-17 Nanoink, Inc. Motifs de moiré générés par éclairage angulaire de surfaces
US8382002B2 (en) 2010-01-26 2013-02-26 Nanoink, Inc. Moiré pattern generated by angular illumination of surfaces
US20240012941A1 (en) * 2022-07-07 2024-01-11 Versa Networks, Inc. User interface (ui) for a remote browser isolation (rbi) protected browser
US12210654B2 (en) * 2022-07-07 2025-01-28 Versa Networks, Inc. User interface (UI) for a remote browser isolation (RBI) protected browser

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