The invention relates to a method for encoding a dimensionally stable packaging container or an associated constituent made of plastics material, wherein the packaging container is suitable for storing consumer goods such as food, detergents, etc., wherein a film-shaped, flat plastics material for forming the three-dimensional packaging container or the associated constituent is deep-drawn using a tool mold while, at a plurality of positions, the outer sides or the inner sides thereof undergo a first shape-changing treatment acting on the first surface thereof for producing a plurality of three-dimensional codes.

Aspects described herein may provide detection of a physical characteristic of a credential, thereby allowing for authentication of the credential. According to some aspects, these and other benefits may be achieved by detecting the physical characteristic with the credential. An image of a credential may be received. An optical characteristic of a secure feature of the credential may be determined. An expected optical characteristic of the secure feature may be determined based on known properties of the secure feature. A determination as to whether the credential is authentic may be based on a comparison of the determined optical characteristic of the secure feature to the expected optical characteristic of the secure feature.

Aspects described herein may provide detection of a physical characteristic of a credential, thereby allowing for authentication of the credential. According to some aspects, these and other benefits may be achieved by detecting the physical characteristic with the credential. An image of a credential may be received. An optical characteristic of a secure feature of the credential may be determined. An expected optical characteristic of the secure feature may be determined based on known properties of the secure feature. A determination as to whether the credential is authentic may be based on a comparison of the determined optical characteristic of the secure feature to the expected optical characteristic of the secure feature.

Examples are directed toward anticounterfeit markings printed on a substrate. A method includes determining with a microprocessor running computer executable code non-transitorily stored on tangible computer readable media that: a first microprinting appears on a front side of the substrate as front side markings of first portions of a plurality of characters having dimensions in a micrometer range when viewed from the front side with reflected light, a second microprinting appears on a back side of the substrate as back side markings of second portions of the plurality of characters having dimensions in the micrometer range when viewed from the back side with reflected light, and the first microprinting and the second microprinting in combination appear as microprinting of whole characters of the plurality of characters when viewed with transmitted light.

A layer-structure includes at least a base layer with a top surface and a top layer, wherein the top layer is arranged above the base layer in a height direction, wherein a first color section is partially provided in and/or on the top surface of the base layer, the first color section and the top surface of the base layer having a luminance contrast, wherein the luminance contrast, defined as Weber contrast, has a value that is at least 0.20, and wherein the first color section and the top surface of the base layer are covered by the top layer, so that a watermark visual appearance is provided.

A layer-structure includes at least a base layer with a top surface and a top layer, wherein the top layer is arranged above the base layer in a height direction, wherein a first color section is partially provided in and/or on the top surface of the base layer, the first color section and the top surface of the base layer having a luminance contrast, wherein the luminance contrast, defined as Weber contrast, has a value that is at least 0.20, and wherein the first color section and the top surface of the base layer are covered by the top layer, so that a watermark visual appearance is provided.

The invention relates to a security element (1) with a first volume hologram layer (11), which spans a coordinate system with the coordinate axes x and y (3, 4) perpendicular to each other in an unbent state of the security element (1), wherein a first volume hologram is introduced into the first volume hologram layer (11) in at least one first area (51), wherein the first volume hologram is formed such that a first item of information (21-30) is visible for an observer (7) in a first observation situation in a first predefined bent state of the security element (1) and is not visible in the first observation situation in the unbent state of the security element (1) or vice versa.

The invention relates to a method for encoding a dimensionally stable packaging container or an associated constituent made of plastics material, wherein the packaging container is suitable for storing consumer goods such as food, detergents, etc., wherein a film-shaped, flat plastics material for forming the three-dimensional packaging container or the associated constituent is deep-drawn using a tool mold while, at a plurality of positions, the outer sides or the inner sides thereof undergo a first shape-changing treatment acting on the first surface thereof for producing a plurality of three-dimensional codes.

The invention relates to a method for encoding a dimensionally stable packaging container or an associated constituent made of plastics material, wherein the packaging container is suitable for storing consumer goods such as food, detergents, etc., wherein a film-shaped, flat plastics material for forming the three-dimensional packaging container or the associated constituent is deep-drawn using a tool mold while, at a plurality of positions, the outer sides or the inner sides thereof undergo a first shape-changing treatment acting on the first surface thereof for producing a plurality of three-dimensional codes.

Some implementations provide a computer-assisted method for embedding information in an identification document. The method includes: modulating information by varying lengths of line segments; generating a line code that includes the line segments with corresponding lengths; and applying the line code on an identification document such that the information is used to authenticate the identification document as genuine when a person presents the identification document to verify an identify of the person.