A system and associated method, the system including an item including a substrate including a polymer material and a first diffraction feature configured to diffract incident radiation into the substrate at an angle greater than the critical angle and launch the incident radiation into a waveguide transmission mode within the substrate to transmit the incident radiation laterally within the substrate, and a computing device including a radiation source configured to irradiate the item at a location of the first diffraction feature directly or indirectly on or within the substrate such that radiation is transmitted laterally within the substrate and a camera configured to measure emitted radiation from the substrate after lateral transmission of the incident radiation, where, in connection with irradiating with the radiation source and measuring the emitted radiation with the camera, the computing device is disposed in contact with the substrate.

A document forgery detection method comprising using at least one processor for providing at least one histogram of gray level values occurring in at least a portion of at least one channel of an image assumed to represent a document including text, the histogram having been generated by image processing at least a portion of at least one channel of an image assumed to represent a document including text, the image having been sent by a remote end user to an online service over a computer network, evaluating monotony of at least a portion of the at least one histogram; and determining whether the image is authentic or forged based on at least one output of the evaluating.

A method and system for authenticating an item includes providing the item including a polymer substrate comprising a polymer material and a doping material, the polymer material and the doping material configured to transmit radiation laterally through the polymer substrate, and the doping material capable of scattering radiation and absorbing radiation of at least one specific wavelength to generate a spectral signature in a spectral band of wavelengths of the transmitted radiation, irradiating the item with incident radiation characterized by a spectral band of wavelengths spanning a band of wavelengths including the at least one specific wavelength absorbed and scattered by the doping material, detecting the spectral signature after the radiation is transmitted laterally through the polymer substrate, and determining a code associated with the spectral signature.

A hybrid document includes a document having visible markings, one or more light-controlling elements embedded in or on the document, and a controller including a circuit having a non-volatile memory. The controller is embedded in or on the document and electrically connected to the one or more light-controlling elements for controlling the one or more light-controlling elements. A power input connection is electrically connected to any one or all of the controller, the circuit, the memory, or the one or more light-emitting elements. The memory stores a state and the circuit causes the one or more light-controlling elements to indicate the state. A hybrid document validation machine is adapted to accept one or more of the hybrid documents, change the state of the hybrid documents, and optionally display the state on a display.

The SACOS apparatus solves counterfeiting issues instantaneously and develops new security features in order to improve the role that international regulatory commissions, governments, and central banks play to effectively fight counterfeiting.

A wirelessly powered display comprises a substrate, an antenna with multiple turns disposed on the substrate, an electronic circuit disposed on the substrate, and one or more pixels each having one or more inorganic light-emitting diodes disposed on the substrate. The electronic circuit is electrically connected to the one or more inorganic LEDs and the antenna, the antenna is responsive to electromagnetic energy to provide electrical power, and the electronic circuit includes a power converter that converts a signal with a relatively high current and low voltage to a signal with a relatively high voltage and low current. A wirelessly coupled display system includes a device including a wireless power transmitter that provides wireless power within a specified range and one or more wirelessly powered displays located within the range and responsive to the wireless power provided by the device to display an image.

A detection method and system includes applying a gas to an article, the article including a gasochromic material capable of emitting a radiation emission spectrum in the presence of the gas, the article further including a first absorptive material capable of absorbing radiation in a first narrow bandwidth within the emission spectrum to produce a first narrow bandwidth absorption line in the emission spectrum, irradiating the article in the presence of the gas; and detecting the emission spectrum having the first narrow bandwidth absorption line.

The invention relates to a method for securing a document including a visual element, carried out by a processing unit comprising processing means, the method comprising generation, from the visual element, of a reference security datum, and storage of the reference security datum,

wherein the reference security datum is generated by means of an algorithm configured so as to generate: for any image acquired from the visual element, a security datum whereof the differences relative to the reference security datum are less than a determined threshold, and for any image acquired on a different visual element, a security datum whereof the differences relative to the reference security datum are greater than said threshold.

The present invention relates to a method of identifying and/or distinguishing materials by means of luminescence, wherein at least one luminescent substance is incorporated into the material and/or applied onto the material and the luminescence behaviour of the substance is analysed after excitation by means of radiation, and the use thereof for identifying and/or sorting and/or recycling and/or authenticating and/or performing a quality check and/or formulation check on materials.

A bank note processing system having a combined florescence and phosphorescence detection system. The bank note processing system includes a detection module which has a detector housing having a first compartment and a second compartment separated by a light baffle. An illumination source and a first sensor module are disposed in the first compartment of the detector housing and a second sensor module is disposed in the second compartment of the detector housing. The illumination source directs light to the bank note and the first sensor module measures the bank note's florescence at a first point in time. The second sensor module measures the bank note's phosphorescence at a second point in time and the detection module determines whether the bank note is a counterfeit bank note using the measured florescence and the measured phosphorescence.