Systems and methods to perform validation of authentication of a security device in a decentralized network are disclosed. In one aspect, embodiments of the present disclosure include a method which can be implemented on a system to, identify telemetry associated with the successful authentication. The telemetry is further in a distributed ledger in the decentralized network and can be used to determine validity of an authentication attempt of the security device by a second user device.

There is provided a non-transitory computer-readable storage medium tangibly embodying machine-readable visual representation of data encoded therein, the data being retrievable by reading and decoding the visual representation by a visual code reader, the visual representation including: multiple function patterns; a first visual code comprising a first encoded message embedded therein, and a first subset of the function patterns, such that reading the first encoded message requires reading the first function patterns subset; and a second visual code comprising a second encoded message embedded therein, and a second subset of the function patterns, such that reading the second encoded message requires reading the second function patterns set, wherein the first function patterns subset and the second function patterns subset have at least one common function pattern, and wherein at least a part of the second visual code event occurs.

Security devices of various form factors with chaosmetric artifacts are disclosed. In one aspect, embodiments of the present disclosure include a security device, having a physical surface having formed thereon a composite pattern. The composite pattern can created from joining or overlap of imprinting of a first base pattern and a second base pattern. The first base pattern is created from a first basic building block and the basic building block can forms chaosmetric artifacts in the physical surface upon printing.

A nonwoven is provided having a pattern displaying at least two groups of areas having different optical properties distinguishable to reading and decoding equipment. The pattern may be arise from differences in the microstructure of the web. The nonwoven material may have an embossed pattern having a basic, static component and a dynamic component which varies within a given length of the nonwoven web. Further, a method is provided for obtaining information from a nonwoven web, comprising observing the web surface using an optical reading device, collecting data based on differences in optical properties in the web surface, storing in a digital memory a pattern based on the collected data and comparing the stored pattern to a collection of previously stored patterns.

A multiple-pattern fiducial for a heterogeneous imaging sensor system. The multiple-pattern fiducial includes a first pattern detectable by a first wavelength of electromagnetic energy, and a second pattern detectable by a second wavelength of electromagnetic energy.

There is provided a barcode detection device including an image sensor and a processor. The image sensor captures an image frame of a barcode. The processor calculates a gradient vector of bars of the barcode in the image frame for determining a rotation angle of the image sensor. The rotation angle is used to calibrate a detected bar width.

A data-transmission system, comprising measurement means, having memories, to create and collect measurement data, an output device having a zero-power passive state, to show in the zero-power passive state, machine-readable code containing the measurement data created using the measurement means, a power supply for the output device and the measurement means, a server arrangement to process and/or store the measurement data, and one or several reader devices to read the code from the output device in the zero-power passive state and arranged for data transfer with the server arrangement. The output device and measurement means with memories are to be arranged at monitoring objects.

An article for an aerosol generation device comprising a tobacco material configured to generate an aerosol is disclosed. The article includes a wrapper. The wrapper comprises an information code for storing information on the article. The information code is optically recognizable. The information code includes a code unit having a pattern for storing information on the article. The code unit is repeated on the article. Each code unit comprises a reference element indicating the presence and, preferably, the position of the code units.

A collation device includes a light source unit; a camera unit that receives light emitted from the light source unit and reflected in a collation area of an object to acquire a photographed image of the collation area; and a processor configured to, by executing a program: detect a positional relationship between the light source unit and the camera unit by using the photographed image, and notify of a collation result between the photographed image and a registered image prepared in advance by using the positional relationship.

In general, the subject matter described in this specification relates to security credentials for documents, such as identification documents. One example is an identification document that includes a photographic image of an individual associated with the document, and a spiral pattern applied to a region of the identification document. The spiral pattern includes an elliptical spiral segmented into a plurality of arc segments, where wherein the arc segments of the spiral pattern encode identification data associated with the individual. Other implementations include corresponding processes, systems, apparatus, and computer programs related to generating and verifying identification documents with spiral patterns.