Sicpa Holding Sa

Giesecke+devrient Currency Technology Gmbh

Andrea Callegari

Eric Decoux

Thomas Tiller

Frédéric Gremaud

Todor Dinoev

Claude-Alain Despland

Pierre Degott

Evgeny Loginov

Tristan Jauzein

Yves Berthier

Olivier Rozumek

Jean-Luc Dorier

Brahim Kerkar

Lorenzo Sirigu

Yuliy Schwartzburg

Romain Testuz

Mark Pauly

Christophe Garnier

Alain Mayer

Mathieu Gillieron

Christian Fuhse

Cécile Pasquier

Raphael Dehmel

Christoph Mengel

Edmund Halasz

Catherine Fankhauser

Philipp Egger

Christine Reinhard

Xavier Cédric Raemy

Benito Carnero

Oscar De Feo

Gisèle Baudin

Kalin Nicolov

Bart Suichies

Yana Kisselova-Weckerle

Cécile Laporte

Thierry Mauron

Stéphanie Rascagneres

Yves Brodard

Aamir Qayoom

Eric Estermann

Gatien Chevallier

Arnault Weber

Huu Duc Christophe Pham

The invention relates to a security marking (), a method and a device for reading and decoding the security marking (), a security document () marked with the security marking (), and a method and a system for verifying and authenticating said security document (). The security marking () comprises a machine readable marking () overlapping with a magnetically induced layer () of a material including magnetically oriented reflective platelet-shaped magnetic or magnetizable pigment particles with two zones () and () of distinct orientations of the particles. The encoded data on the machine readable marking () being decodable only after the data separately read from the two zones () and () are gathered.

Security marking, method and device for reading the security marking, security document marked with the security marking, and method and system for verifying said security document

It is disclosed a security element comprising a substantially flat substrate including first and second areas, wherein the first area displays a first motif and generates a first color movement effect to be seen in the first motif while the substrate gets tilted over a first angular tilting range, the second area displays a second motif and generates a second color effect to be seen in the second motif and within a second angular tilting range, the first and second angular tilting ranges are different, and the first area comprises either a micro-mirror structure or a print of magnetically oriented pigments and the second area comprises the other one of the micro-mirror structure and the print of magnetically oriented pigments.

Security element

The invention relates to a method of designing a refractive transparent or partially transparent light-redirecting surface, or a reflective light-redirecting surface, of a caustic layer comprising providing a discrete representation of an input target image, calculating a generalized power diagram for a set of image pixels pof the target image and computing a piecewise light-redirecting surface of the caustic layer based on a calculated optimal set of weights minimizing a cost function associated with the set of image pixels p. The invention also relates to an optical security element, a marked object, a method of visually authenticating an object and use of the optical security element for authenticating or securing against counterfeiting.

Method of designing a light-redirecting surface of a caustic layer, an optical security element comprising the designed light-redirecting surface of the caustic layer, a marked object, use and method of authenticating the object

The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present invention provides security documents and decorative articles comprising one or more optical effect layers (OELs) and methods for producing said OELs, said OELs comprising magnetically oriented platelet-shaped magnetic or magnetizable pigment particles in an at least partially cured coating layer (×10) and exhibiting an eye-catching optical effect thus allowing an observer to easily authenticate said OELs upon titling at viewing/observation angles between about −45° and about +45°.

Security documents or articles comprising optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers

The invention relates to an anti-copy optical element comprising a caustic layer and a mask layer configured to simultaneously display a visible image reproducing a reference image and form a projected image containing a visible caustic pattern reproducing a reference pattern, upon illumination of the optical element with a light source, the projected image being distinct from the reference image. The invention also relates to a method for designing a relief pattern of a light-redirecting surface of said caustic layer consistently with the transmission properties of the mask layer.

Optical element and a method of visually authenticating an object

An optical security element made of a refractive transparent or partially transparent optical material and comprising an optical assembly of a caustic layer having a light-redirecting surface with a relief pattern of given depth and a focal length fand an adjacent lens element of focal length fconfigured to redirect incident light received from a point-like light source through it and to form a projected image containing a caustic pattern directly on a retina of an observer. A marked object, as well as a method of visually authenticating an object, and use of optical security elements for authenticating or securing against counterfeiting are also disclosed.

Optical security elements, marked object, method of authenticating an object and use of optical security elements for authenticating or securing against counterfeiting

The invention allows using a commodity hardware (e.g. a smartphone, a tablet, a computer . . . ) to automatically establish a high level of assurance authentication and identification of any government-issued identity document of a user (e.g. identity card, driving license, passport . . . ) and link that to digital identity counterpart. Moreover, the invention allows personalizing a material-based security feature provided of said government-issued identity document to create a link between the identity document and its data content that can be read by such a commodity hardware and serves as reliable credential for accessing a service once the material-based security feature has been authenticated via the commodity hardware and a signature of the identity data of the user has been authenticated by a server of an authority.

Verifiable access credential

The invention relates to a method of authenticating a magnetically induced mark applied on a substrate including magnetically oriented partially reflective platelet-shaped magnetic or magnetizable pigment particles, with a portable device equipped with a light source operable to deliver visible light, an imager, a processor and a memory, the method comprising calculating, with the processor, a corresponding average intensity I of the light reflected by the partially reflective platelet-shaped magnetic or magnetizable pigment particles and collected by the imager at corresponding viewing angle &#x3b8;, storing the calculated average intensities of the reflected light and corresponding viewing angles to obtain a reflected light intensity curve I(&#x3b8;), comparing the stored reflected light intensity curve I(&#x3b8;) with a stored reference reflected light intensity curve I(&#x3b8;) for said magnetically induced mark, and determining whether the magnetically induced mark is genuine based on a result of the comparison.

Method for authenticating a magnetically induced mark with a portable device

The invention relates to a thin optical security element comprising a reflective or refractive light-redirecting surface having a relief pattern operable to redirect incident light from a light source and form a projected image on a projection surface, the projected image comprising a caustic pattern reproducing a reference pattern that is easily visually recognizable by a person. The invention also relates to a method for designing a relief pattern of a light-redirecting surface of a thin optical security element.

Thin optical security element and method of designing it

The invention relates to a thin optical security element comprising a reflective or refractive light-redirecting surface having a relief pattern operable to redirect incident light from a light source and form a projected image on a projection surface, the optical parameters of this optical security element fulfilling a specific projection criterion such that the projected image comprises a caustic pattern reproducing a reference pattern that is easily visually recognizable by a person. The invention also relates to a method for designing a relief pattern of an optical security element.

Optical security element

A method for authenticating a timepiece including measuring acoustic vibrations emitted by said timepiece to obtain an electrical signal, said electrical signal indicating a variation of a magnitude of said measured acoustic vibrations as a function of time, wherein said electrical signal comprises a plurality of acoustic events associated with mechanical shocks taking place in said timepiece, extracting from said electrical signal or from a representation of said electrical signal in a time, frequency or time-frequency domain at least one of a magnitude information on a magnitude of one of said plurality of acoustic events, time information on said one of said plurality of acoustic events, and a frequency information on a frequency of said one of said plurality of acoustic events, comparing said extracted information with at least one of a reference information, and deriving information on an authenticity of said timepiece based on the comparing.

Method and system for authenticating a timepiece

A method of authenticating a product by taking an image of the product and comparing the image with a reference image of a genuine product taken previously to determine if the products in the two images are the same. The two images are captured under substantially similar conditions so that the two images are as similar as possible prior to the comparison. The two images are processed in order to calculate for each of them a list of significant points. The significant points are compared to determine a degree of correspondence between the significant points. An answer is output indicating the authenticity of the product based on the degree of correspondence. Some of the matching significant points may be used to define a common coordinate system for the two images. The two lists of significant points may be compared in this common coordinate system.

Image analysis for authenticating a product

A substrate having thereon a marking or layer comprising a cured chiral liquid crystal precursor composition which comprises at least one salt that changes the position of a selective reflection band exhibited by the cured composition compared to the position of a selective reflection band exhibited by a cured composition that does not contain the at least one salt. A modifying resin made from one or more polymerizable monomers is disposed between the substrate and the marking or layer and changes the position of the selective reflection band exhibited by the cured precursor composition comprising the at least one salt on the substrate in the one or more areas. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Composite marking based on chiral liquid crystal precursors

Method for authenticating a timepiece comprising measuring acoustic vibrations emitted by said timepiece to obtain an electrical signal indicating magnitude information comprising a variation of a magnitude of the measured acoustic vibrations as a function of time. The electrical signal comprises at least one specific tone associated with the presence of a quartz resonator in the timepiece. Method further comprises performing transform of electrical signal into frequency domain to obtain frequency-domain power spectrum indicating variation of power of electrical signal as function of frequency, processing the frequency-domain power spectrum so as to reveal at least one narrow peak in frequency-domain power spectrum corresponding to the at least one specific tone, and extracting at least one resonance frequency corresponding to said at least one narrow peak. Method further comprises comparing extracted at least one resonance frequency with at least one reference resonance frequency; and determining an authenticity of said timepiece.

Method and system for authenticating a device

Method for authenticating a timepiece including applying at least one external excitation to said timepiece using an external device, measuring acoustic vibrations at least one of emitted and absorbed inside the timepiece to obtain an electrical signal representative of the measured acoustic vibrations, wherein a magnitude of the electrical signal represents magnitude information of the measured acoustic vibrations as a function of time, comparing the magnitude information with at least one reference magnitude information, and determining an authenticity of the timepiece based on the comparing.

Method and system for authenticating using external excitation

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Chavannes-près-Renens, Switzerland

Andrea Callegari