According to a first aspect of the present disclosure, an electronic tamper detection device is provided, comprising a tamper loop, a processing unit and a storage unit, wherein the processing unit is configured to detect that the tamper loop is open and to store, if the tamper loop is open, data indicating that the tamper loop has been opened in said storage unit, wherein the storage unit is a non-volatile memory. According to a second aspect of the present disclosure, a corresponding tamper detection method is conceived. According to a third aspect of the present disclosure, a corresponding computer program is provided.

A method for detecting package tampering comprises performing first scanning of a container comprising a packaged item and a plurality of packaging elements surrounding the packaged item, wherein each of the plurality of packaging elements comprises an identification component, and the first scanning comprises using the identification component of each of the plurality of packaging elements to detect each of the plurality of packaging elements. The method further comprises determining an orientation of each of the plurality of packaging elements in the container from the first scanning, performing second scanning of the container, determining an orientation of each of the plurality of packaging elements in the container from the second scanning, and comparing the orientation of each of the plurality of packaging elements in the container from the first scanning with the orientation of each of the plurality of packaging elements in the container from the second scanning.

A display that exhibits improved anti-counterfeiting effects. The display includes an uneven-structure-forming layer having an uneven structure on one surface and a reflecting layer that covers at least part of an unevenly structured surface. In the display, the uneven-structure-forming layer includes a first region group including a plurality of first regions, each first region including a flat part and a plurality of convexities or a plurality of concavities, the top surface of each of the convexities or the bottom surface of each of the concavities is substantially parallel to a surface of the flat part; distances between the centers of adjacent convexities or concavities are not equal; the convexities have a uniform height, or the concavities have a uniform depth; the first region group is formed, with the first regions arrayed inside at a regular pitch.

The anti-counterfeiting structure includes an allochroic layer including an allochroic part having a characteristic of changing from a first material to a second material in response to laser irradiation, a first layer transmissible to a laser beam, a second layer transmissible to the laser beam, at least a part of the second layer being located between the allochroic layer and the first layer, and a coating layer transmissible to the laser beam and covering at least the first layer. The coating layer and the first layer are bonded together more weakly than the first layer and the second layer are. One of the first layer and the second layer is a foamable layer having a characteristic of changing from an unfoamed state to a foamed state in response to laser irradiation, while the other of the first layer and the second layer is an optical device.

A display member including a light transmission layer having a principal surface including a plurality of pixels; and a metal layer covering the principal surface, one or more of the pixels include a first region, one or more of the pixels include a second region, the first region has a plurality of first grooves or ridges each of which extends in a longitudinal direction in a first angle range of about 10 to +10 with respect to a first direction, the second region has a plurality of second grooves or ridges each of which extends in a longitudinal direction in a second angle range of about 65 to +65 with respect to a second direction perpendicular to the first direction, the second grooves or ridges form a diffraction structure, and the metal layer does not cover at least part of the first region and covers the second region.

A tamper seal includes an optical waveguide arranged to guide a propagating light-beam along a propagation direction. First and second portions of the tamper seal are configured to be arranged on first and second parts, respectively, which are movable relative to each other. The first portion has an input coupler arranged to couple incident light into the optical waveguide, and the second portion has at least one output coupler arranged to couple out of the optical waveguide at least partially light guided in the optical waveguide. The input coupler, the optical waveguide, and the output coupler are configured to transmit light from the input coupler to the output coupler. The waveguide is configured to be disruptable and includes a layer having a distinctive appearance that is changed in response to an at least partial disruption of said optical waveguide.

The disclosed embodiments provide a method for tamper-proof protection of containers used for shipment of goods. An optical fiber is embedded in an Optical Shield Wallpaper which lines all interior surfaces of any size of a shipping container, package, box, barrel or other shaped container. Wallpaper is manufactured using large scale rollers that press fibers with encapsulated adhesives onto an appropriate medium. Small medicine containers are protected with a fiber optic shield and sensors manufactured using ink jet printing techniques. Light is applied to the optical fiber and a measurement of optical fiber characteristics is performed. Digital signal processing is used to generate pedigree information, which may include items such as shipping location, serial numbers and lot numbers for the goods. The status of the autonomous anti-tampering system is monitored real-time for unauthorized intrusions. Intrusions detected are relayed to an authorized recipient via a variety of communication channels.

Proposed is a dual-light-emitting material that includes a porous framework composed of a metal ion and an organic ligand, an insert body placed in a cavity of the porous framework, and a nanocrystal containing the metal ion of the porous framework, wherein the organic ligand is configured to emit room-temperature organic phosphorescence (RT-OP) and the nanocrystal is configured to emit fluorescence.

A display includes a substrate with a light-transmitting property, a relief structure-forming layer disposed on at least one surface of the substrate and including a relief-structured region on a surface thereof opposite to its surface in contact with the substrate, a light-reflecting layer disposed on the surface of the relief structure-forming layer including the relief-structured region, and a printed layer formed on a surface of the substrate opposite to the surface on which the relief structure-forming layer is disposed, or between the relief structure-forming layer and the light-reflecting layer, or on a side of the light-reflecting layer opposite to its surface in contact with the relief structure-forming layer. The relief-structured region is constituted by recessed or protruding portions arranged two-dimensionally, has low reflectivity and low diffusibility under a normal illumination condition, and exhibits a diffracted light-emitting property under a specific condition.

A system and method for detecting tampering with a seal is provided. A loop seal tamper indicating device includes a seal wire that may be passed through a secured item or container to form a loop with the free ends of the seal wire passing through a seal housing. A plunger body including an adhesive-filled cavity is inserted into the seal housing, such that a piston expresses the adhesive into the space between the seal housing and the plunger body. The adhesive may contain reflective particles and is cured to fix the particles and the adhesive in place. A reference image may be taken to record the unique identifier and reflective signature of the adhesive. Future validation images may be compared to the reference image to determine whether the reflective signature has changed, thus indicating that the seal has been tampered with.