Sicpa Holding Sa

Benito Carnero

Jean-Luc Dorier

Evgeny Loginov

Andrea Callegari

Todor Dinoev

Mia Milos-Schouwink

Xavier Cédric Raemy

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

Security element including a first and second pattern formed by a first and second material respectively in or on a first and a second region of a substrate respectively, the first pattern partially overlapping with said second pattern, the first material comprising a first luminescent dye, which upon excitation by electromagnetic radiation falling within its excitation wavelength range emits electromagnetic radiation in a first emission wavelength range, the second material comprising a second luminescent dye, which upon excitation by electromagnetic radiation falling within its excitation wavelength range emits electromagnetic radiation in a second emission wavelength range, said first emission wavelength range overlapping with the excitation wavelength range of the second luminescent dye, so that upon irradiation within the excitation wavelength range of the first luminescent dye the second luminescent dye is excited, in the overlapping area of the patterns, to emit electromagnetic radiation in the emission wavelength range.

Security element formed from at least two inks applied in overlapping patterns, articles carrying the security element, and authentication methods

A security element comprising a first and a second pattern formed in or on a substrate is described, the first pattern () being formed by discrete elements (--) of a first material that are distributed over a first region () of the substrate (), the second pattern () being formed by discrete elements (--) of a second material that are distributed over a second region () of the substrate (), said second material being different from said first material, said first and second regions of the substrate overlapping, wherein the discrete elements of at least one of the first and second patterns are distributed randomly, a part of the discrete elements of the first pattern () overlap with a part of the discrete elements of said second pattern (), and the security element is defined by the first pattern (), the second pattern () and a third pattern () associated with the overlap of some or all of the discrete elements of said first and second patterns.

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Preverenges, Switzerland

Benito Carnero