[go: up one dir, main page]

WO2017114569A1 - Dispositif de sécurité individualisé grâce à des particules biologiques - Google Patents

Dispositif de sécurité individualisé grâce à des particules biologiques Download PDF

Info

Publication number
WO2017114569A1
WO2017114569A1 PCT/EP2015/081398 EP2015081398W WO2017114569A1 WO 2017114569 A1 WO2017114569 A1 WO 2017114569A1 EP 2015081398 W EP2015081398 W EP 2015081398W WO 2017114569 A1 WO2017114569 A1 WO 2017114569A1
Authority
WO
WIPO (PCT)
Prior art keywords
security device
inimitable
substrate
biological particle
biological
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/EP2015/081398
Other languages
English (en)
Inventor
Dejan Pantelic
Mihailo RABASOVIC
Aleksandar KRMPOT
Vladimir LAZOVIC
Danica PAVLOVIC
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.)
Institute Of Physics Belgrade University Of Belgrade
Original Assignee
Institute Of Physics Belgrade University Of Belgrade
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute Of Physics Belgrade University Of Belgrade filed Critical Institute Of Physics Belgrade University Of Belgrade
Priority to PCT/EP2015/081398 priority Critical patent/WO2017114569A1/fr
Publication of WO2017114569A1 publication Critical patent/WO2017114569A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material

Definitions

  • the present invention relates to security devices for identification and authentication of goods, articles and documents.
  • Optically variable devices are a common protective element on various types of documents (e.g. identity cards, passports, visas, bank cards) - see the book "Optical document security” ed. by R. L. Van Renesse, Artech House, (1998).
  • Holograms and other diffractive elements are mainly used, because their protective value is based on complexity of micron and submicron structures. Manufacturing is a complicated and expensive process whose final result is a master hologram - a single, unique prototype. To make protection commercially acceptable, the master hologram is copied and multiplied, resulting in a replica shim used for embossing into a plastic foil, which is then integrated into a document using a hot tool. The final result is a series of documents possessing exactly the same protective OVD. This is a significant drawback, because, if the OVD is counterfeited, a large number of fake documents can be manufactured.
  • Another problem is that the optical effects are not very pronounced, as well as their variability, and the complexity can be observed only at the sub-wavelength levels, using electron microscopy. Technique for estimating the degree of complexity was not described, either. Variation among the specimens of the same species is rather small. In that respect, the method can be used only for the forensic level of document authentication.
  • Embossed holograms have been individualized by using a two-stage process (US7420720 (B2)— 2008-09-02, G. Dausmann, I. Ments, "Optical element and method for the production thereof).
  • the first one generates a master hologram with a background image.
  • additional embossing shims are used containing letters or numbers, capable of uniquely marking a hologram.
  • the problem solved by the invention is individualization of mass-produced security devices with holograms. This is done by attaching biological particles with pronounced individuality.
  • the invention is directed to a security device, comprising: a transparent substrate with at least one embedded hologram on its upper surface; at least one inimitable biological particle arranged and attached on or above the upper surface of the substrate; a transparent superstrate, having a recess, and adhering to the substrate and enclosing the biological particle(s)
  • the security device of the invention preferably comprises at least one predefined position without diffracting structures being formed on the substrate, and the inimitable biological particle(s) being placed at said position.
  • the predefined position(s) without diffracting structures is (are) transparent, thus forming at least one window, wherein the inimitable biological particle(s) is (are) placed in at least one of said windows.
  • more than one predefined positions are provided and arranged according to a predetermined pattern.
  • the inimitable biological particle(s) is (are) selected from scales, hairs or bristles from the Lepidoptera wing or body.
  • the inimitable biological particle(s) is (are) selected from scales from the Coleoptera species cuticle and/or Araneae species body. Furthermore, the inimitable biological particle(s) may be selected from hairs or bristles of the Trichoptera species.
  • the inimitable biological particle(s) is (are) firmly attached to the substrate by a transparent adhesive.
  • the inimitable biological particle(s) can be held in place on the substrate only by the natural attractive forces between the particle(s) and the substrate, without using adhesive substances.
  • the inimitable biological particle(s) is (are) cut in a predetermined shape, before arrangement on or above the substrate. In another embodiment, more than one inimitable biological particles are used.
  • the inimitable biological particles are stacked on one another, before arrangement on or above the substrate.
  • the inimitable biological particle(s) is (are) inscribed with information, before or after arrangement on or above the substrate and/or enclosing of the biological particle. More preferably, the inimitable biological particle(s) is (are) overtly inscribed with information by cutting through its (their) surface.
  • the inimitable biological particle(s) is (are) covertly inscribed with information by permanently bleaching its (their) fluorescence.
  • the inimitable biological particles of several species are chosen according to their variability of optical properties.
  • the substrate comprises a transparent adhesive layer on its lower surface.
  • the invention is also directed to the use of the security device of the invention for identification and authentication of goods, articles and documents. Finally, the invention is directed to a method of manufacturing a security device of the invention, comprising the following steps:
  • the first criterion for biological particle selection is according to variability of optical properties across their surface (near-field) or in the far-field of the scattered radiation. Detected optical properties include optical field amplitude and phase, field vorticity, reflection and transmission spectral distribution, overall biological particle shape, moire pattern, polarization pattern, iridescence, diffraction, and fluorescence.
  • the second selection criterion is the underlying complexity of biological particle structure, which has to span the range from nanometer to micron-size features, intricately distributed in three-dimensions.
  • the third criterion is their fragility, necessary for tamper sensitivity.
  • the fourth criterion is the non-degradability of the structure, at least within the validity period of the document.
  • the fifth criterion is the thinness of the structures such that they can be easily integrated within holographic OVDs, whose thickness is of the order of several tens of microns. The selection process requires fulfillment of all five criteria.
  • Preferred biological particles are those which can be found in the cuticle of various species of Lepidoptera (scales, hairs or bristles), Coleoptera (scales), Trichoptera (hairs or bristles), Araneae (scales).
  • Lepidoptera scales, hairs or bristles
  • Coleoptera scales
  • Trichoptera hairs or bristles
  • Araneae scales
  • Fig. 1 plate-like or cylindrical, having a wall of submicron thickness, which encloses the internal volume.
  • a number of features may exist, such as nano-pillars, photonic crystals, fluorescent nano-particles.
  • One or both external surfaces are patterned with grating-like ridges and cross-ridges (Fig. 2).
  • Ridges have a lamellar structure, similar to the Bragg grating.
  • the main constituent is chitin, a biological polysaccharide insoluble in water and many other solvents. They are permanent remnants of individual cells, and may endure without changing their optical properties for long periods - it is known that dried insects like butterflies may survive for decades in entomological collections. Iridescence, diffraction pattern or fluorescence of individual particles may strongly vary across the surface (of the order of 50 x 150 ⁇ ), as can be seen in Fig. 1. Thickness is of the order of few microns, resulting in fragility of the whole structure, which is stable enough to be transferred and adhered to the hologram substrate.
  • a hologram may be prepared for individualization by making special marks on the hologram surface which define a local coordinate system. Particles are attached to the hologram in the positions defined with respect to the said coordinate system. Large surface-energy adhesive may be used to permanently fix the particles to the hologram surface. A particle is protected from tampering by the transparent superstrate, which is permanently affixed to the hologram using high surface-energy adhesive or hot-stamping. A recess is made in a superstrate, such that the particle is protected from high pressures exerted during the stamping process. A single particle or a plurality of them can be attached to the hologram in a predefined pattern.
  • Fig. 1 Optical image of an individual butterfly scale, where the strong, local variability of iridescence can be observed.
  • Fig. 2 Scanning electron microscope image of the butterfly scale, where the complexity of its internal structure can be seen.
  • Fig. 3 Exploded view of the security hologram presented in two orthogonal projections.
  • Fig. 4 A security hologram with a window, where a number of individually cut and shaped Lepidoptera or Coleopteran scales are positioned inside the window.
  • Fig. 5 A security hologram with an array of windows where individual Lepidoptera or
  • Fig. 6 A security hologram with an array of windows where the individually cut and shaped Lepidoptera or Coleopteran scales are attached.
  • Fig. 7 A security hologram with an array of windows where the individually overtly inscribed Lepidoptera or Coleopteran scales are attached.
  • Fig. 8 A security hologram with an array of windows positioned in a rectangular grid.
  • Windows are partially filled with Lepidoptera or Coleopteran scales as to produce a binary or bar-code.
  • Fig. 9 A security hologram without windows, where Lepidoptera or Coleopteran scales are randomly distributed across the hologram surface.
  • Fig. 10 A security hologram with an array of windows positioned in a quasiperiodic or aperiodic tiling (e.g. Penrose tiling).
  • a quasiperiodic or aperiodic tiling e.g. Penrose tiling
  • Fig. 3 presents two orthogonal views of one embodiment of the security device of the present invention. It is composed of a substrate 1 , having a hologram 2 embedded on its upper surface. Additional marks 3, 4 and 5, whose dimensions are smaller than 200 ⁇ , are incorporated into the hologram 2.
  • the lower surface of the substrate 1 carries an adhesive layer 6, which can be activated either by heat or by pressure in order to integrate the security device with an article, good or document.
  • the upper surface of the substrate 1 comprises a small patch of adhesive 7, whose surface is just large enough to receive a biological particle 8.
  • the biological particle 8 is permanently attached onto the adhesive 7.
  • the biological particle 8 is then covered with a superstrate 9, having a recess 10 large enough to enclose the biological particle 8, without touching its upper surface.
  • the lower surface of the superstrate 9 is covered with a transparent layer of heat or pressure activated adhesive 11 , such that the recess 10 is left without adhesive layer.
  • Superstrate 9 and substrate 1 are attached to each other, such that they enclose the biological particle 8.
  • the hologram 2 is demetalized at the places where the biological particles 8 are to be put, thus producing a window 12 which enables observation of the optical properties of the biological particle from underneath.
  • a number of cut shaped butterfly scales 8 are positioned inside the hologram window 12, following the previously described procedure.
  • Fig. 6 representing another embodiment of the security device of the present invention designed and manufactured to have an unspecified number of opaque or transparent windows without a diffraction grating 13, 14, 15, 16 and 17.
  • the windows are positioned in an orderly manner, corresponding to certain symmetry, as in Fig. 6.
  • the windows are of identical dimensions, width and height of each window being within the range of 150 ⁇ - 300 ⁇ .
  • a transparent adhesive patch is placed inside each window and individual iridescent Lepidoptera or Coleopteran scales 8 are attached to each patch.
  • Lepidoptera species are those possessing silver spots or patches on their wings, such as: Issoria lathonia, Argyrophorus argenteus, Dione moneta, Dione juno, Agraulis vanillae, Aryinis addipe, Argynis aglaja, Argynis paphia.
  • Other Lepidoptera species, possessing structurally colored scales, may be used, too, such as: Diachrysia chrysitis, Macdunnoughia confusa, Autographa gamma, Jordanita globulariae, Callophrys rubi.
  • Preferred Coleoptera species are those possessing scales on their cuticle: Hoplia coeruela, Pseudomyagrus waterhousei, Lamprocyphus augustus, Hypera diversipunctata, Prosopocera lactator, Cyphus hancocki, Entimus imperialis, Sphingnotus mirabilis, Hoplia argentea, some Curculionidae, some Collembola.
  • Preferred Trichoptera species are: Pseudoleptocerus chirindensis, Phylloicus abdominalis, Nectopsyche punctata, Banyallarga vicaria, Hesperophylax designates, Polycentropus flavomaculatus, Mystacides azurea, Mystacides longicornis, Anthripsodes albifrons, Limnephilus binotatus.
  • Preferred Araneae species are those possessing scales on their cuticle, such as: Maratus volans, Maratus splendens, Phidippus audax, Pamphobeteus antinuous, Cyriopagopus lividum.
  • Windows can be either filled with scales from a single species, or with scales from several different species.
  • the hologram 2 with scales 8 is covered with a transparent foil having recesses exactly matching the positions of windows on the hologram.
  • a thin layer of a transparent adhesive is placed on the bottom side of a cover, without covering the recesses.
  • individual Lepidoptera or Coleopteran scales 8 are cut shaped, using laser machining, and then placed inside the hologram windows 12, as shown in Fig. 7, following the previously described embedding procedure.
  • Lepidoptera or Coleopteran scales 8 are overtly inscribed with information 20 (e.g. text, numbers, image, barcode) by cutting through the scale 8, preferably by laser.
  • Information 20 can be inscribed before or after the encapsulation of the scale 8 in the security device 1.
  • the scales are cut by using short pulse laser - preferably pico-second or femto-second, whose energy is slightly above the damage threshold of scales.
  • the laser beam is introduced in a microscope, where it is focused by the objective, directly onto the scale.
  • the laser beam position is controlled using a pair of computer-controlled, galvanometer-scanning mirrors.
  • Lepidoptera or Coleopteran scales 8 are covertly inscribed with information 20 (e.g. text, numbers, image, barcode), by bleaching the scale fluorescence.
  • Information 20 can be inscribed before or after the encapsulation of the scale 8in the security device 1.
  • the scales are bleached by using short pulse laser - preferably pico-second or femto- second, whose energy is slightly below the damage threshold of scales.
  • the laser beam is introduced in a microscope, where it is focused by the objective, directly onto the scale.
  • the laser beam position is controlled using a pair of computer-controlled, galvanometer-scanning mirrors.
  • windows 12 are arranged in a regular rectangular grid (Fig. 9), and their occupancy depends on the binary encoding of information, wherein a window occupied with a scale designates binary 1, and an unoccupied window designates binary 0.
  • FIG. 11 A further embodiment is depicted in Fig. 11, where windows 12 are placed according to quasiperiodic or aperiodic tiling (e.g. Penrose tiling).
  • quasiperiodic or aperiodic tiling e.g. Penrose tiling

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Holo Graphy (AREA)

Abstract

La présente invention concerne un dispositif de sécurité doté d'un hologramme, individualisé par la fixation permanente de particules d'origine biologique, possédant une grande variabilité d'effets optiques et une structure interne complexe. Les espèces biologiques et les particules correspondantes sont choisies pour maximiser la variabilité et la complexité, tout en ayant une durabilité, une sensibilité à la violation et une épaisseur de taille micrométrique. Le dispositif de sécurité comprend un substrat transparent (1) doté d'au moins un hologramme encastré (2) sur sa surface supérieure ; au moins une particule biologique inimitable (8) conçue et fixée sur la surface supérieure du substrat (1) ou au-dessus de celle-ci ; une couche supérieure transparente (9), présentant un évidement (10), et adhérant au substrat (1) et renfermant la ou les particules biologiques (8).
PCT/EP2015/081398 2015-12-30 2015-12-30 Dispositif de sécurité individualisé grâce à des particules biologiques Ceased WO2017114569A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/081398 WO2017114569A1 (fr) 2015-12-30 2015-12-30 Dispositif de sécurité individualisé grâce à des particules biologiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/081398 WO2017114569A1 (fr) 2015-12-30 2015-12-30 Dispositif de sécurité individualisé grâce à des particules biologiques

Publications (1)

Publication Number Publication Date
WO2017114569A1 true WO2017114569A1 (fr) 2017-07-06

Family

ID=55066638

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/081398 Ceased WO2017114569A1 (fr) 2015-12-30 2015-12-30 Dispositif de sécurité individualisé grâce à des particules biologiques

Country Status (1)

Country Link
WO (1) WO2017114569A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10406847B2 (en) * 2015-12-30 2019-09-10 Institute Of Physics Belgrade, University Of Belgrade Security tag containing a pattern of biological particles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031077A1 (fr) * 2005-09-17 2007-03-22 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Particules inorganiques de marquage destinees a l'identification de produits en termes de preuve d'authenticite, leur procede de production et leur utilisation
WO2009052811A2 (fr) * 2007-10-27 2009-04-30 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Système de sécurité avec un système micro-optique de grossissement intégré

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007031077A1 (fr) * 2005-09-17 2007-03-22 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Particules inorganiques de marquage destinees a l'identification de produits en termes de preuve d'authenticite, leur procede de production et leur utilisation
WO2009052811A2 (fr) * 2007-10-27 2009-04-30 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Système de sécurité avec un système micro-optique de grossissement intégré

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MASTERCARD ET AL: "Card Identification Features Card Front Security Features Overview Security Feature Current Requirement/Placement New Requirement/Placement MasterCard Brand Mark Card front No change MasterCard Card Front Features and Designs Card Front Requirements", 31 December 2005 (2005-12-31), XP055297501, Retrieved from the Internet <URL:https://www.mastercard.com/uk/merchant/en/downloads/10862_MasterCard_Card_Identification_Features.pdf> [retrieved on 20160824] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10406847B2 (en) * 2015-12-30 2019-09-10 Institute Of Physics Belgrade, University Of Belgrade Security tag containing a pattern of biological particles

Similar Documents

Publication Publication Date Title
EP2422299B1 (fr) Document de sécurité ayant une source d&#39;énergie de polymères électroactifs et un afficheur nano-optique et méthode d&#39;authentification du document de sécurité
US20150347887A1 (en) Optically Variable Data Storage Device
WO2011017741A1 (fr) Dispositifs optiquement variables et procédé de fabrication
JP7322879B2 (ja) 認証体、認証体の製造方法、認証体の読み取り方法、および認証体の検証方法
TW201115526A (en) A surface bearing patterned indicia having micro-structures and method of making the same
JP2019510250A (ja) 単層画像投影システム
EP3397503B1 (fr) Étiquette de sécurité contenant un motif de particules biologiques
JP6556161B2 (ja) データキャリア
JP2024109700A (ja) セキュリティラベル
MX2008003194A (es) Descodificaciones reflectivos para el uso en la descodificacion de imagenes opticamente codificadas.
AU2011100725A4 (en) Diffraction grating
EP3114279A1 (fr) Procédé de formation de document de sécurité
WO2017114569A1 (fr) Dispositif de sécurité individualisé grâce à des particules biologiques
CN108773229B (zh) 防伪装置及制造方法和安全票证
WO2017114572A1 (fr) Étiquette de sécurité dotée de particules découpées au laser d&#39;origine biologique
JP6774646B2 (ja) 光学素子、印刷物および偽造防止媒体
US9937743B2 (en) Anti-counterfeiting methods
WO2014127402A1 (fr) Dispositifs de sécurité contenant des zones fortement réfléchissantes et procédés de fabrication
EP4397480A1 (fr) Feuille de transfert, article de transfert, corps d&#39;affichage, procédé et dispositif pour vérifier l&#39;authenticité d&#39;un corps d&#39;affichage, et procédé d&#39;authentification individuelle
AU2013100171A4 (en) Methods of manufacturing security devices including highly reflective areas
WO2016183623A1 (fr) Microlentilles mises en forme
TW201032140A (en) Embossed hologram chip and manufacturing method therefor
HK40038021A (en) Self-authenticating articles incorporating precious metals
JP2014066810A (ja) 表示体および表示体の製造プロセス

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15817914

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15817914

Country of ref document: EP

Kind code of ref document: A1