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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

3. GS1 - Wikipedia

   en.wikipedia.org/wiki/GS1

   GS1 is a not-for-profit, international organization developing and maintaining its own standards for barcodes and the corresponding issue company prefixes. The best known of these standards is the barcode, a symbol printed on products that can be scanned electronically. GS1 has 118 local member organizations and over 2 million user companies.

4. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode ...

5. Rectangular Micro QR Code - Wikipedia

   en.wikipedia.org/wiki/Rectangular_Micro_QR_Code

   Rectangular Micro QR Code (also known as rMQR Code) is two-dimensional (2D) matrix barcode invented and standardized in 2022 by Denso Wave as ISO/IEC 23941. [2] rMQR Code is designed as a rectangular variation of QR code and has the same parameters and applications as original QR code.

6. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

7. What you need to know about QR code scams and how to ... - AOL

   www.aol.com/know-qr-code-scams-stay-204500807.html

   Trust your gut. Sharp instincts can also help users avoid the quishing traps. Be wary of improbable deals and emotional appeals, and never disclose personal information like Social Security ...

8. File:QR Code Structure Example 2.svg - Wikipedia

   en.wikipedia.org/wiki/File:QR_Code_Structure...

   QR Code Structure Example 2.svg. Size of this PNG preview of this SVG file: 800 × 449 pixels. Other resolutions: 320 × 180 pixels | 640 × 359 pixels | 1,024 × 574 pixels | 1,280 × 718 pixels | 2,560 × 1,436 pixels | 1,312 × 736 pixels. Original file ‎ (SVG file, nominally 1,312 × 736 pixels, file size: 11 KB) This is a file from the ...

9. QR decomposition - Wikipedia

   en.wikipedia.org/wiki/QR_decomposition

   QR decomposition. In linear algebra, a QR decomposition, also known as a QR factorization or QU factorization, is a decomposition of a matrix A into a product A = QR of an orthonormal matrix Q and an upper triangular matrix R. QR decomposition is often used to solve the linear least squares (LLS) problem and is the basis for a particular ...