A two layers QR code label anti-counterfeiting system includes a an outer QR code label and an inner QR code label that is arranged in a concealed manner and is paired with the outer QR code label for storage in a server. When a consumer proceeds with reading by applying an application program (APP) of a mobile phone, a QR code of the outer label is read first and after the reading, the mobile phone displays peeling off the outer QR code label to subsequently read a QR code of the inner label. The data of the two QR codes are transmitted by the mobile phone to the server for comparison with originally stored data to identify and determine genuineness or fakeness. In an attempt for determination of genuineness or fakeness for one more time or multiple times, it only needs to read the inner QR code label.

This electronic device is suitable for measuring a quantity. This measurement device comprises: a unit for measuring the quantity, able to deliver measurement data, an encoding unit, able to convert measurement data into structured data according to a structuration format, the data structured according to the structuration format including at least one portion of the measurement data, a unit for generating at least one two-dimensional matrix code are from the structured data, and a display unit, able to display each generated matrix code. The structured data further comprise a first identifier of the structuration format, said first identifier being able to identify in a unique way the structuration format.

Methods are disclosed for hiding a two-dimensional code such as a QR code within a visible layer of randomly scattered line segments. The scattering parameters comprise the length of successive line segments as well as their relative offsets. These parameters are stored in a key.

The hidden 2d code is recovered with a computing device such as a smartphone carrying out the acquisition, perspective correction, and rectification of the visible layer of scattered line segments. This computing device synthesizes in its memory according to that same key a hidden layer of scattered line segments. The superposition of the acquired, perspectively corrected and rectified visible layer and of the hidden layer yields an image from which the hidden 2D code is revealed. The presented methods enable the secret transmission of information from the real world of documents and objects to databases located on computer networks.

A method for preventing tampering with a package includes: affixing a plurality of labels to a physical package, each label including a machine-readable code, the machine-readable code being encoded with a unique value that is unique across the machine-readable code included in each of the plurality of labels; reading, by a computing device, the machine-readable code included in each label of the plurality of affixed labels to obtain the encoded unique value; storing, in the computing device, a cryptographic key pair comprised of a public key and a private key; generating, by the computing device, a digital signature using the private key; and electronically transmitting, by the computing device, a data message to a node in a blockchain network, wherein the data message includes at least the generated digital signature, the public key, and the unique value read for each label of the plurality of labels.

A method for controlling an object is provided. The method includes selecting an image data corresponding to a first code; converting the first code into a second code; and controlling the object by the second code or a portion of the second code.

A code includes a first part printed by using a first pigment, and a second part printed by using a second pigment which is easier to discolor than the first pigment, wherein the code is decodable by using information about discoloration of the second pigment.

A system for battery binding includes a service end electronic device, at least one battery device and at least one carrier device. The service end electronic device is configured to send a carrier identifier corresponding to a carrier device to a battery device for storage therein in order to bind the battery device to the carrier device.

An optically readable tag and methods and systems for decoding the optically readable tag are disclosed. The optically readable tag comprises: a border region having an indicative shape; and an encoding region, defined by the border region, the encoding region comprising a plurality of encoding shape objects, wherein data is encoded by relative sizes of the encoding shape objects.

A billboard containing encoded information comprising: a billboard body comprising a front face presenting an advertisement content; and a plurality of color blocks being distributed in a preset mode on the front face and each of which individually covering a part of the front face, wherein the plurality of color blocks are encoded as color geometric graphic code elements and the entire front face can be optically identified and decoded to obtain the encoded information when captured by a mobile terminal, and the encoded information or the information decoded by the mobile terminal and imported to a web page is associated with the advertisement content. The billboard containing the encoded information allows a user, at a normal viewing distance, to scan, identify and decode the billboard to obtain the encoded information and to perform an image indexing, thereby further improving the publicity effect of the advertisement.

The present disclosure provides methods of generating supports (e.g., beads) comprising barcode molecules coupled thereto. A barcode molecule coupled to a support may comprise a barcode sequence and a functional sequence. A barcode molecule may be generated using two or more ligation reactions in a combinatorial fashion. A support comprising two or more different barcode molecules may be useful for analyzing or processing one or more analytes such as nucleic acid molecules, proteins, and/or perturbation agents.