An optical device includes an array of lenses and a plurality of first and second segments disposed under the array of lenses. At a first viewing angle, the array of lenses presents a first image for viewing without presenting the second image for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second image without presenting the first image for viewing. In some examples, individual ones of the first and second segments can comprise specular reflecting, transparent, diffusely reflecting, and/or diffusely transmissive features. In some examples, individual ones of the first and second segments can comprise transparent and non-transparent regions. Some examples can incorporate more than one region producing an optical effect.

A packaged redeemable code system is disclosed. The packaged redeemable code system includes a paper insert having a front surface with a removable item, and a rear surface with redeemable code. The packaged redeemable code system further includes a paper sleeve having an interior that encloses the paper insert and conceals the redeemable code. The paper sleeve also having a ripcord configured to open an edge of the paper sleeve to provide an access point for removal of the paper insert. The paper sleeve further having a front surface with a cutout extending therethrough. The cutout aligns with and provides visual access to the removable item. The removable item is a different color than or provides contrast with the front surface of the paper sleeve. The paper sleeve further having a rear surface with an activation code that is associated with the redeemable code.

In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment flakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.

In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment flakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.

The present invention relates to plastic films with improved laser engraving capability, chemical resistance and mechanical stress, special embodiments of such films in the form of co-extrusion films, layer structures comprising such films, use of such films, as well as security documents, preferably identification documents, containing such films.

A method and system of making a secure financial card with dynamic viewing angles is provided. The secure financial card includes a first surface and a second surface opposite the first surface. The financial card includes at least a first portion of indicia and a second portion of the indicia indicative of the card information. The first portion of the indicia and the second portion of the indicia are configured with respective viewing angles and printed on one of the first surface and the second surface. The financial card includes a slide device moveable to different positions associated with different portions of indicia. The slide device allows the respective portion of the indicia to be viewable from different viewing angles. An account number of the financial card is read by rotating the financial card and full card information is unable to be captured by an image of the financial card.

An identification document (1) with a personalization region (3) for receiving biometric image information (5) is proposed. The personalization region (3) comprises a recording layer (11) for image information as well as a lens arrangement (20). Viewing the biometric image information (5) is effected through the lens arrangement (20). The biometric image information (5) holds basic information (12) consisting of a base image (15) and a derivative image (16) derived from the base image (15). The derivative image (16) shows or emphasizes a constituent of the base image (15) that is essential for recognition. At a first viewing angle (α1) the base image (15) is dominantly recognizable, at a second viewing angle (α1) the derivative image (16), so that in the perception of the image information combined from base image (15) and derivative image (16) a plastic overall impression arises.

The present invention relates generally a method to authenticate a data carrier, such as passports, licenses, identification card . . . by hiding at least two optically encoded image within a data carrier so that the data carrier is authenticated through at least two factor authentication process. In the methods of the present invention, at least two reliable, readable optically encoded image are hidden within the data carrier wherein each of the encoded image is visible through a same decoder device but under different specific lighting conditions without the former having influence on the quality of the latter. The authentication methodology of the present invention provides an improved security, being even more difficult to reproduce by infringers, even more difficult to remove, replace or exchange and easy to check.

An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink.

An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink.