A structure for secure containment of information (SSCI) that is in the form of a laminate which includes at least two layers. The laminate is constructed to contain information such as a code, serial number, informational feature, encryption key or personal identification number (PIN). The information is located between the layer of the laminate such that the code, serial number, informational feature, encryption key, or PIN is not detectable from outside the laminate. The SSCI is configured to provide access and expose the code, serial number, informational feature, encryption key, or PIN by delaminating at least one layer, thereby indicating that tampering has occurred to the laminate. The SSCI can also function as a public key or private key for a blockchain, to provide access to a physical lock or to provide account access to claim financial value.

A structure for secure containment of information (SSCI) that is in the form of a laminate which includes at least two layers. The laminate is constructed to contain information such as a code, serial number, informational feature, encryption key or personal identification number (PIN). The information is located between the layer of the laminate such that the code, serial number, informational feature, encryption key, or PIN is not detectable from outside the laminate. The SSCI is configured to provide access and expose the code, serial number, informational feature, encryption key, or PIN by delaminating at least one layer, thereby indicating that tampering has occurred to the laminate. The SSCI can also function as a public key or private key for a blockchain, to provide access to a physical lock or to provide account access to claim financial value.

Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a legitimate or counterfeit copy.

Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a legitimate or counterfeit copy.

An optically variable device may be manufactured by aligning magnetic flakes on a surface of an adhesive layer by applying the flakes onto the adhesive layer surface in presence of a magnetic field, and curing the adhesive layer having magnetic flakes adhered to the adhesive layer. When cured, the adhesive layer holds the magnetic flakes oriented, enabling subsequent encapsulation of the oriented magnetic flakes in a coating layer on the adhesive layer, without a substantial loss of orientation of the magnetic flakes.

An optically variable device may be manufactured by aligning magnetic flakes on a surface of an adhesive layer by applying the flakes onto the adhesive layer surface in presence of a magnetic field, and curing the adhesive layer having magnetic flakes adhered to the adhesive layer. When cured, the adhesive layer holds the magnetic flakes oriented, enabling subsequent encapsulation of the oriented magnetic flakes in a coating layer on the adhesive layer, without a substantial loss of orientation of the magnetic flakes.

The invention relates to a security element having a coating consisting of a material which has an optically variable effect, in particular a colour shift effect, and has recesses that can be recognised in transmitted light, wherein the security element comprises a support substrate, a partial layer with recesses, and a layer structure that generates a colour shift effect, characterised in that the security element, on the face which has the coating consisting of the material that has an optically variable effect, comprises one or more partial coatings consisting of a layer which has colours that are transparent in visible light and fluorescent in UV light.

The invention relates to a security element having a coating consisting of a material which has an optically variable effect, in particular a colour shift effect, and has recesses that can be recognised in transmitted light, wherein the security element comprises a support substrate, a partial layer with recesses, and a layer structure that generates a colour shift effect, characterised in that the security element, on the face which has the coating consisting of the material that has an optically variable effect, comprises one or more partial coatings consisting of a layer which has colours that are transparent in visible light and fluorescent in UV light.

The magnetic checking of value documents with highly coercive and/or lowly coercive magnetic regions, involves after the magnetization of all magnetic regions in a first direction, a second magnetization is effected, in which only the lowly coercive magnetic material is re-magnetized, but the highly coercive magnetic material remains aligned in the first magnetization direction. Magnetic signals are detected with an inductive magnetic detector, having several measuring tracks transverse to the transport direction of the value document. To evaluate the magnetic signals of the measuring tracks, the strongest two local minima and/or maxima of the respective magnetic signal are ascertained by a measuring track as a function of time. A minima comparison value and/or maxima comparison value of the respective measuring track is determined. The magnetic coding of the security element is checked on the basis of the minima comparison values and/or maxima comparison values of the measuring tracks.

The magnetic checking of value documents with highly coercive and/or lowly coercive magnetic regions, involves after the magnetization of all magnetic regions in a first direction, a second magnetization is effected, in which only the lowly coercive magnetic material is re-magnetized, but the highly coercive magnetic material remains aligned in the first magnetization direction. Magnetic signals are detected with an inductive magnetic detector, having several measuring tracks transverse to the transport direction of the value document. To evaluate the magnetic signals of the measuring tracks, the strongest two local minima and/or maxima of the respective magnetic signal are ascertained by a measuring track as a function of time. A minima comparison value and/or maxima comparison value of the respective measuring track is determined. The magnetic coding of the security element is checked on the basis of the minima comparison values and/or maxima comparison values of the measuring tracks.