A reduced size optical code identifier includes a transparent body having a flat bottom surface with a rounded or domed top surface that meets the bottom surface around the perimeter of the bottom surface. An optical code is provided in the body adjacent the bottom surface and is visible through the top surface. The top surface is configured to reduce reflection to facilitate optical recognition and decoding of the optical code. The body has a maximum length or diameter of about twelve millimeters or less. The identifier can be placed on an object or structure and then used to associate information with the optical code of the identifier so that the information can be retrieved using a computing device that can optically recognize the code and communicate with a remote server.

Indicia readers may be configured with two illumination light sources: a primary light source for illuminating primary indicia (e.g., a barcode) and a secondary ultraviolet (UV) light source for revealing secondary indicia (e.g., UV fluorescent watermarks) that are used to protect against counterfeit and fraud. Ultraviolet light can be harmful. The present invention embraces methods and a device for controlling the secondary UV light source to limit UV exposure. When an exposure risks is detected, the UV light source is deactivated.

In a multilayer chip component according to an aspect of the present disclosure, dots of a two-dimensional code provided on a main surface of an element body has a semicircular cross-sectional shape. That is, since substantially no corner portions are present in a cross-sectional shape of the dots, stress is unlikely to remain when the dots are formed, and stress is unlikely to be concentrated after the dots are formed. Therefore, cracking is unlikely to occur in the foregoing multilayer chip component.

The invention relates to a method and device for detecting and decoding a two-dimensional encoded pattern, e.g. of the Robust Encoding Pattern type (REP), even in case the pattern is applied on a non-uniform colored background of a surface of a substrate. The operations for decoding such an encoded pattern involve detecting the states of its symbols through a test pattern, checking that local differences between parameter values of the elements of the symbols are consistent with an allowed representation of the test pattern to assign via a one-to-one mapping the states of the symbols of the test pattern to the corresponding symbols of the encoded pattern, and decoding the encoded pattern based on the assigned representation of its symbols.

A two-dimensional marker for marking an object comprises a plurality of line segments each extending between a first end point and a second end point thereof, wherein at least one of the line segments comprises a shape of at least one period of a periodic waveform.

A barcoded indicator operative to provide a machine-readable indication of exceedance of at least one threshold by at least one product quality affecting parameter, the barcoded indicator including at least a first barcode and at least a second barcode, the at least a second barcode being in a second barcode unreadable state prior to exceedance of the at least one threshold and upon exceedance of the at least one threshold the at least a first barcode becoming unreadable and generally simultaneously the at least a second barcode becoming readable.

A window including a base substrate, which includes a transmission region and a bezel region in a plan view and includes a front surface and a rear surface that are opposite to each other in a thickness direction, a light-blocking layer, which is disposed on the rear surface of the base substrate and is overlapped with the bezel region, and a printing layer, which is disposed on the light-blocking layer and has a target surface, in which a barcode pattern is formed. The printing layer may have a chromatic color, and a width of the printing layer may be less than a width of the light-blocking layer.

A first computing device of a multi-part code system includes one or more optical scanners and a network application associated with a network computing device of the multi-part code system. The network application is operable to obtain a second portion of a code associated with a second computing device. The network computing device generated the code for an interaction between the first and second computing device. The network application is further operable to display the second portion of the code on a display area of an interactive display, receive a first portion of the code, and instruct a user to drag the first portion of the code to the display area to align with the second portion of the code. When the first and second portions of the code are aligned, the network application produces the code and sends a finalized interaction notification to the network computing device.

Systems and methods are provided for decoding secure tags using an authentication server and secure tag reader. The system can include at least one processor and at least one non-transitory memory. The memory can contain instructions that, when executed by the at least one processor, cause the secure tag reader to perform operations. The operations can include detecting a potential secure tag in an image and generating a normalized secure tag image using the image and a stylesheet. The operations can further include providing an identification request to an authentication server, the identification request including the normalized secure tag image. The operations can additionally include receiving rules for decoding tag data encoded into the secure tag as tag feature options and decoding the tag data using the received rules.

Systems/techniques that can facilitate video/animated QR codes are provided. In various aspects, a processor can identify a QR code. In various instances, the processor can decompose the QR code into a static fragment and a plurality of dynamic fragments. The static fragment can be a portion of the QR code that contains sufficient information to facilitate an online transaction, whereas the plurality of dynamic fragments can be a plurality of portions of the QR code that collectively contain sufficient information to facilitate an offline transaction. In various instances, the processor can sequentially render a plurality of frames on an electronic display, where each frame depicts the static fragment and a corresponding one of the plurality of dynamic fragments. Accordingly, a point-of-sale device can facilitate an online transaction by scanning one frame rendered by the processor, and/or can facilitate an offline transaction by scanning all frames rendered by the processor.