The present invention is directed to an anti-counterfeiting device comprising a first sensor configured to undergo a first user perceptible change in response to a first biologically produced stimulus that emanates directly from a biological source; and a second sensor configured to undergo a second user perceptible change in response to a second biologically produced stimulus that emanates directly from the biological source. The second biologically produced stimulus is different than the first biologically produced stimulus.

An activatable quality label operative to provide an indication of exceedance of a temperature threshold following activation thereof at a temperature less than or equal to an activation temperature, including a readable indicator located on the quality label and operative, following activation of the quality label at or below the activation temperature, to readably indicate exceedance of the temperature threshold, an actuator element operative to activate the quality label and indicia at least partially formed by thermochromic ink, the thermochromic ink having a first visual appearance at temperatures less than or equal to the activation temperature and a second visual appearance at temperatures above the activation temperature, such that a visual appearance of the indicia is indicative of whether the quality label is at a temperature less than or equal to the activation temperature and hence may be activated.

A method for detecting a component including a concealed pattern includes: detecting infrared electromagnetic radiation reflected or emitted by a component including a first pattern, the component including: a substrate; the first pattern disposed over at least a portion of the substrate; an optional primer layer disposed between at least a portion of the substrate and at least a portion of the first pattern; and a first visibly opaque layer including an infrared transparent pigment, the first visibly opaque layer disposed over at least a portion of the first pattern; and comparing the reflectivity and/or absorbance of infrared electromagnetic radiation by the first pattern at one wavelength to the reflectivity and/or absorbance by the primer layer and/or the substrate at the same wavelength.

A selectively activatable time-temperature indication (TTI) device, an article of manufacture comprising thereof and an activation method thereof. The TTI comprises a first element, a second element and a spacer configured to separate between the first element and the second element and is having a non-activated state and an activated state. TTI devices of this disclosure can be utilized to indicate the shelf life of a perishable good.

A method of detecting temperature of an electrical terminal. The method includes: applying a material patch to a surface of the electrical terminal, the thermal mass of the material patch is less than 25 percent of the thermal mass of the electrical terminal, whereby the material patch does not appreciably increase the electrical resistance or thermal capacitance of the electrical terminal; and remotely sensing a change in the material patch with an electrically isolated circuit which is external to the electrical terminal to determine if the electrical terminal is operating at a safe temperature to optimize current flow across the electrical terminal.

A method for detecting a component including a concealed pattern includes: detecting infrared electromagnetic radiation reflected or emitted by a component including a first pattern, the component including: a substrate; the first pattern disposed over at least a portion of the substrate; an optional primer layer disposed between at least a portion of the substrate and at least a portion of the first pattern; and a first visibly opaque layer including an infrared transparent pigment, the first visibly opaque layer disposed over at least a portion of the first pattern; and comparing the reflectivity and/or absorbance of infrared electromagnetic radiation by the first pattern at one wavelength to the reflectivity and/or absorbance by the primer layer and/or the substrate at the same wavelength.

A method for marking a product (1) with a photoluminescent mark, said mark comprising a photoluminescent portion (10) which is transparent under normal light conditions and revealed by photoluminescence under UV illumination, said mark further comprising a non photoluminescent portion (9) which is transparent under normal light conditions as well s under UV illumination, said method comprising: deposing on said product a stack, said stack comprising alternatively layers (2,4) such as AlN, with a thickness of less than 1 micron and layers (3) of a second material, such as GaN with a thickness of less than 10 nm; raising the transparency of said non photoluminescent portion (10) with a deposition of transparent material (6) or incorporation of ions into said non photoluminescent portions.

The present application provides a glass temperature-sensitive and anti-counterfeiting identification film, which comprises a glass film, a glue layer and a protective film; wherein a partial area of an outer surface of the glass film is provided with a temperature-sensitive label.

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.

Wavelength-selective films are visibly apparent under the selective wavelength. Wavelength-selective films typically reflect off axis the selected wavelength and therefore can provide high-contrast against a background when applied in a pattern on a substrate. However, it is difficult to apply unique patterned embedded images from film. Disclosed is a cost-effective method and construction of a patterned wavelength-selective image to a substrate. In the disclosed wavelength-selective image, wavelength-selective film particles are applied to an adhesive pattern to create the wavelength-selective image.