Abstract: A method of generating a multiplexed image for printing that can be observed in a plurality of modes includes determining a finite shape of a multiplexed palette in a combined color space. The contrast of the multiplexed image in each mode can be optimized by determining a maximum volume hyperrectangle enclosed in the finite shape. Gamut mapping to this maximum volume hyperrectangle allows for generation of a multiplexed image that has a maximum contrast and is free from artifacts caused by an interdependency between the colors in each mode. Performing a dimensionality reduction using PCA allows for reducing the complexity of the optimization problem.

Abstract: A personalizable security document includes a combination of two secure features, namely, a laser-engravable material, and a hologram overlapping the laser-engravable material. The metallic properties of the laser-engravable material result in an enhancement of the holographic effect obtained from the hologram. Additionally, the hologram may extend to other portions of the security document in a continuous manner, for example, as a full-page hologram. This may connect the secondary image formed in the laser-engravable material with other features provided in different portions of the security document to further increase the security.

Abstract: A personalizable security document including a combination of two secure features, namely, a laser-engravable material embedded in a substrate of the security document and an embossed pattern formed in an outer surface of the substrate and overlapping the laser-engravable material. The combination of the laser-engravable material and the embossed pattern may result in a change in appearance of the embossed pattern when the security document is viewed at different observation angles. Security can be further enhanced by providing a watermark below the laser-engravable material. Further, by providing appropriate structures in the embossed pattern and the laser-engravable material, a personalized security document exhibiting a moiré effect can be obtained.

Abstract: Various systems and methods for securely transacting over the Internet are described herein. The systems and methods receive, at a credential application executing on a mobile device, a disambiguation payload based on an interaction with a web service. The systems and methods receive, by the credential application, information representing the web service. The systems and methods verify, by the credential application, that an identity of the web service matches the web service represented by the information. The systems and methods, in response to successfully verifying that the identity of the web service matches the web service represented by the information, connecting to the confirmed web service for providing one or more credentials from the credential application.

Abstract: An identification document has an activatable security feature, the activatable security feature has a first antenna part and a second antenna part arranged such that a gap is formed between them. The security feature further has a patch connected to the first antenna part and the second antenna part such that it bridges the gap, the patch being formed of a material having conductive properties which are changeable from low-conductive to high-conductive such that a conductive path is provided between the first antenna part and the second antenna part after energy has been applied to the patch, such as by laser irradiation. The security feature further has an electrical device such as an RFID chip connected to the first antenna part and/or the second antenna part.