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Anonymous users2024-02-06If it is, you scan it with your phone and the information will appear. Such as the ex-factory price...
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Anonymous users2024-02-05It's a square grid. The barcode is scanned by the supermarket.
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Anonymous users2024-02-04Like 1D barcodes, 2D barcodes have many different encoding methods, or symbologies. In terms of the coding principles of these symbologies, they can generally be divided into the following two types.
1.Row-type 2D barcodes.
Row row 2D barcode (also known as stacked 2D barcode or layered 2D barcode), its encoding principle is based on 1D barcode, stacked into two or more lines as needed. It inherits some characteristics of one-dimensional barcode in terms of coding design, verification principle, reading mode, etc., and the reading equipment is compatible with barcode printing and one-dimensional barcode technology. However, due to the increase in the number of lines, it is necessary to judge the lines, and its decoding algorithm and software are not exactly the same as those of one-dimensional barcodes.
The representative row-type 2D barcodes are: Code 16K, Code 49, PDF417, etc.
2.Matrix 2D barcodes.
Short array 2D barcode (also known as checkerboard 2D barcode) is encoded in a rectangular space through the different distributions of black and white pixels in the matrix. In the position of the corresponding elements of the matrix, the appearance of the dot (square dot, dot or other shape) represents the binary "1", and the non-appearance of the dot represents the binary "0", and the permutation and combination of the dots determine the meaning represented by the matrix two-dimensional barcode. Matrix two-dimensional barcode is a new type of graphic symbol automatic reading and processing symbology based on computer image processing technology and combined coding principle.
The representative matrix 2D barcodes are: Code One, Maxi Code, QR Code, Data Matrix, etc.
In the current dozens of two-dimensional codes, the commonly used symbology is: PDF417, Data Matrix, Maxi Code, QR Code, Code 49, Code 16K, Code One, etc., in addition to these common two-dimensional barcodes, there are Vericode barcode, CP barcode, CODABLOCK F barcode, Tianzi code, Ultracode barcode, Aztec barcode.
Also known as two-dimensional barcode, the common *** is QR code, QR full name is Quick Response, is a super popular encoding method on mobile devices in recent years, it can store more information than the traditional bar code, but also can represent more data types.
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Anonymous users2024-02-03It is divided into stacked *** and matrix***. At present, dozens of two-dimensional barcodes, commonly used symbology are: PDF417 two-dimensional barcode, Datamatrix two-dimensional barcode, Maxicode two-dimensional barcode, QR code, Code 49, Code 16K, Code One, etc., in addition to these common two-dimensional barcodes, there are Vericode barcode, CP barcode, CODABLOCK F barcode, field code, Ultracode barcode, Aztec barcode.
Hanxin code is the first product with independent knowledge in China.
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Anonymous users2024-02-02The basic ones currently used are stacked.
Retail, logistics, medical care, Internet of Things, food safety traceability, etc.
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