The present invention relates to an article comprising fluorescence marker particles, wherein the fluorescence marker particles are distributed throughout the volume of the article or in a portion of the volume of the article and the fluorescence marker particles are present in a random distribution; the volume in which the fluorescence marker particles are distributed comprises a sub-volume; the sub-volume contains at least a portion of the fluorescence marker particles; the sub-volume is at least partially permeable to electromagnetic radiation having a wavelength in the visible range and/or in the near infrared range and/or in the UVA range; and/or a portion of the surface of the sub-volume is identical to a portion of the surface of the article; and a method of identifying it.

The present invention allows spectral codes to be accurately and consistently deployed for a wide range of labels and substrates or products. Spectral codes provided by one or more taggants are incorporated into transferable images so that these images can be prepared separately under accurate, controlled conditions and then transferred onto labels or other substrates. The transferable images that include one or more taggants further include a metal foil layer that is both highly opaque and thin so that the foil is highly compatible with image transfer techniques.

The present invention allows spectral codes to be accurately and consistently deployed for a wide range of labels and substrates or products. Spectral codes provided by one or more taggants are incorporated into transferable images so that these images can be prepared separately under accurate, controlled conditions and then transferred onto labels or other substrates. The transferable images that include one or more taggants further include a metal foil layer that is both highly opaque and thin so that the foil is highly compatible with image transfer techniques.

A payment card includes hidden features (e.g., textual messages, graphics, emphasis features associated with conspicuous features of the payment card, or the like) undiscernible under only visible light, but discernable under ultraviolet light. The hidden features can be incorporated into multiple layers of a side of the payment card and can be present at different transparencies. The hidden features, applied during manufacturing, can be i) selected (e.g., randomly or sequentially) from an available hidden features list; ii) supplied by user input; and/or iii) selected based on a user's previous hidden feature(s) (e.g., the same as or different from the previous hidden feature). A quality check can include comparing an image of the payment card illuminated under ultraviolet light with the selected hidden feature(s).

A credential with one or more security features is disclosed. The disclosed credential includes a windowed security feature. The windowed security feature is taught to include a mirror element positioned in proximity with a transparent window and a first photo-luminescent feature positioned relative to the transparent window and the mirror element such that the mirror element enhances a luminescence of the first photo-luminescent feature when viewed and illuminated through the transparent window.

A credential with one or more security features is disclosed. The disclosed credential includes a windowed security feature. The windowed security feature is taught to include a mirror element positioned in proximity with a transparent window and a first photo-luminescent feature positioned relative to the transparent window and the mirror element such that the mirror element enhances a luminescence of the first photo-luminescent feature when viewed and illuminated through the transparent window.

The present invention relates to the field of security inks suitable for printing machine readable security features on substrate, security documents or articles as well as machine readable security feature made from said security inks, and security documents comprising a machine readable security feature made from said security inks. In particular, the invention provides security inks comprising one or more IR absorbing materials wherein said security ink allows the production of a machine readable security feature having the following optical properties: a lightness L* equal to or higher than about 80, a chroma C* smaller than or equal to about 15 and a reflectance at 900 nm smaller than or equal to about 60%.

The present invention relates to the field of security inks suitable for printing machine readable security features on substrate, security documents or articles as well as machine readable security feature made from said security inks, and security documents comprising a machine readable security feature made from said security inks. In particular, the invention provides security inks comprising one or more IR absorbing materials wherein said security ink allows the production of a machine readable security feature having the following optical properties: a lightness L* equal to or higher than about 80, a chroma C* smaller than or equal to about 15 and a reflectance at 900 nm smaller than or equal to about 60%.

A security insert with at least one optically recognizable character and at least one tactilely detectable character for an identity document comprises at least a first at least partially transparent layer which has blackenings which form at least one optically recognizable character. A varnish arrangement forming at least one tactilely detectable character is disposed on a layer of the security insert. The at least one optically recognizable character is, at least from the perspective of an observer of the security insert, partially overlaid by the at least one tactilely detectable character, wherein at least a portion of the outer contours of the at least one tactilely detectable character is optically recognizably reproduced by the optically detectable character.

A security insert with at least one optically recognizable character and at least one tactilely detectable character for an identity document comprises at least a first at least partially transparent layer which has blackenings which form at least one optically recognizable character. A varnish arrangement forming at least one tactilely detectable character is disposed on a layer of the security insert. The at least one optically recognizable character is, at least from the perspective of an observer of the security insert, partially overlaid by the at least one tactilely detectable character, wherein at least a portion of the outer contours of the at least one tactilely detectable character is optically recognizably reproduced by the optically detectable character.