In a general aspect, unique unclonable physical identifiers are applied and used. A method of applying the unique marker can include receiving an object having a surface feature and forming a unique marker on the surface feature of the object. The unique marker includes a distribution of elements and conforms with a morphology of the surface feature. The method further includes extracting orientation information from the unique marker. The orientation information can indicate relative spatial orientations of the respective elements. The method additionally includes generating a unique code for the object based on the orientation information. The surface feature can be facets, surface patterns, textures, or other indentations of the object. The surface feature can include a region of the object that is susceptible to tampering.

A freshness label structure includes a label structure and a sealing member. The label structure includes a base material and a phosphor layer. The phosphor layer includes an aggregation-induced phosphor fixed to the base material. The sealing member is impermeable to aqueous liquid, seals the freshness label structure, and includes a porous member impermeable to aqueous liquid and permeable to gas.

The invention is a flexible warning band device that fits a variety of firearm sizes and shapes and warns that a firearm may contain a live round

Apparatus and methods for protecting smart components associated with articles and packaging of articles, including articles and packages labeled with shrink sleeve labels, pressure sensitive labels, and other labels.

Kit of parts comprising a synthetic diamond (17), which is accompanied by a slice (9) that was cut off the same original synthetic diamond (7), whereby both the slice (9) and the synthetic diamond 17) are engraved with an identical identification or with an identification which shows that the synthetic diamond (17) and the slice (9) belong together. The kit also comprises an accompanying numbered certificate (12) of authenticity, which refers to the identical identification engraved on the synthetic diamond (17) and the slice (9). The identical identification engraved on the synthetic diamond (17) and the slice (9) comprises the number of the accompanying certificate (12) of authenticity or refers to it.

In some examples, an optically active article includes a retroreflective substrate; and at least one security element disposed at the retroreflective substrate; an article message disposed at the retroreflective substrate, and wherein the at least one security element comprises validation information that is detectable outside a visible light spectrum, and wherein a combination of the article message and the validation information of the at least one security element indicates whether the optically active article is counterfeit.

A tamper-evident security device including a first part comprising an optically transparent layer including an array of separate optical focussing elements. A second part comprises an array of separate image elements collectively defining an image viewable through the first part. Each of the optical focussing elements is positioned to reveal therethrough a view of one or more of said image element(s). An optically transparent adhesive layer between the first part and the second part which retains the optical focussing elements so positioned with respect to the image elements thereby in cooperation to reveal the image. The first part is mechanically separable from the second part by release of the adhesive layer to cease the cooperation.

An attention tag for a retail article that includes a label having an adhesive region bonded to a retail article and a protruding region that protrudes from the retail article when the label is attached thereto. Moreover, an RFID tag is disposed on the label and includes an RFIC element and an antenna pattern including first and second antenna portions that are respectively connected to first and second ends of the RFIC element. Moreover, the first antenna portion is disposed in the protruding region of the label while the second antenna portion of the RFID tag is disposed in the adhesive region of the label at a position facing a portion of the retail article.

A kit includes one or more pairs of matching color-coded attachment members and tags. The attachment member is configured to be selectively retained to an electrical wire entering an electrical service panel. The corresponding color-coded tag is configured to be attached, such as through magnetic means, to a door of the electrical service panel. The tag includes pre-printed text thereon, which provides descriptive information regarding the electrical circuit formed by the wire to which the attachment member is associated. As such, the color-coding allows a homeowner or technician to easily identify which electrical circuit is controlled by a particular electrical circuit breaker.

Disclosed embodiments may relate to a time-dependent color-changing label for a product. The label may include a first layer comprising a plurality of particles, the particles comprising a time dependent color-changing material that changes color after a predetermined time period, the predetermined time period being greater than one month. The label may also include an attachment structure attaching the first layer to the product. In certain embodiments, the first layer may include a polymer, and the particles may include glass microspheres containing the time-dependent color changing material. The particles may be embedded in the polymer.