The invention relates to a marking composition, by means of which better protection of goods than hitherto available can be achieved independently of the coloring of the goods. The marking composition comprises an infrared-absorbing particulate component and carbon derivative, wherein the weight ratio of infrared-absorbing component to carbon derivative is in the range of approx. 10:1 to approx. 10,000:1.

A method for manufacturing a portable data carrier by means of a continuous manufacturing method, comprises the steps: providing at least one foil as a rolled good, unrolling at least one first foil, with at least a first foil being coated at least partly with an adhesive on at least one side, with at least the first foil being scored on at least one side along at least one creasing edge, with at least the first foil being folded up in precise fit along at least one creasing edge and bonded, with the foil being folded up in the direction of the side which is coated with adhesive, with the side coated with adhesive being arranged on the opposite side of the foil which has at least one scored creasing edge along which it is folded.

A method for manufacturing a portable data carrier by means of a continuous manufacturing method, comprises the steps: providing at least one foil as a rolled good, unrolling at least one first foil, with at least a first foil being coated at least partly with an adhesive on at least one side, with at least the first foil being scored on at least one side along at least one creasing edge, with at least the first foil being folded up in precise fit along at least one creasing edge and bonded, with the foil being folded up in the direction of the side which is coated with adhesive, with the side coated with adhesive being arranged on the opposite side of the foil which has at least one scored creasing edge along which it is folded.

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.

A topcoat layer that has a defined surface structure on an outer surface thereof once the topcoat layer is laminated to a substrate. The surface structure of the topcoat layer provides a matte surface finish to the underlying substrate. Any attempt to alter the substrate or the topcoat layer will result in disruption or destruction of the surface structure of the topcoat layer making such tampering evident. Replication of the surface structure of the topcoat layer by a counterfeiter is also difficult without the appropriate equipment.

A topcoat layer that has a defined surface structure on an outer surface thereof once the topcoat layer is laminated to a substrate. The surface structure of the topcoat layer provides a matte surface finish to the underlying substrate. Any attempt to alter the substrate or the topcoat layer will result in disruption or destruction of the surface structure of the topcoat layer making such tampering evident. Replication of the surface structure of the topcoat layer by a counterfeiter is also difficult without the appropriate equipment.

A transaction card includes at least one metal layer having one or more apertures therein. A light guide is disposed beneath the metal layer. The light guide has a light output and a light input. The light output is positioned to transmit light through at least the one or more apertures of the metal layer. At least one LED is positioned to transmit light into the light guide light input

An optical storage phosphor, a method for checking an authenticity feature, and an apparatus for carrying out a method, relate to an authenticity feature and to a value document. An inorganic optical storage phosphor is provided having a garnet structure and predetermined composition.