QR code payment - определение. Что такое QR code payment
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Что (кто) такое QR code payment - определение


QR code payment         
QR code payment is a contactless payment method where payment is performed by scanning a QR code from a mobile app. This is an alternative to doing electronic funds transfer at point of sale using a payment terminal.
QR code         
  • Example of a QR code with artistic embellishment that will still scan correctly thanks to error correction
  • A sign with a QR code that links to a drinks menu
  • Two QR codes that link to german contact tracing app check-ins during the COVID-19 pandemic
  • Samples of the High Capacity Colored 2-Dimensional (HCC2D) code: (a) 4-color HCC2D code and (b) 8-color HCC2D code.
  • QR codes can be displayed on buildings, such as this one being painted in [[Cape Town]].
  • A QR code used on a large billboard in Japan, linking to the sagasou.mobi website
  • A QR code which links to an obituary and can be placed on a headstone
  • Damaged but still decodable QR code, link to http://en.m.wikipedia.org
  • Structure of a QR code (version 7), highlighting functional elements
  • A QR code to automatically join a Wi‑Fi network
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TRADEMARK FOR A TYPE OF MATRIX BARCODE
ISO/IEC 18004; QR codes; QRcode; I-nigma; 2D Key; Barcode link; MicroQR; SQR codes; QR Code; QR image; Qr code; QR-code; Attaging; Custom qr code; Artistic qr code; Designer qr code; Quick response code; High Capacity Colored 2-Dimensional (HCC2D) Code; HCC2D (High Capacity 2-dimensional) codes; Micro QR code; Micro QR; Micro qr code; Micro qr
A QR code (an initialism for quick response code) is a type of matrix barcode (or two-dimensional barcode) invented in 1994 by the Japanese automotive company Denso Wave. A barcode is a machine-readable optical label that can contain information about the item to which it is attached.
QR decomposition         
  • <math>\mathbf e_1</math>).}} The maximum angle with this transform is 45 degrees.
MATRIX DECOMPOSITION
QR factorization; QR factorisation; LQ decomposition; RQ decomposition; QL decomposition; QRD; QR Factorization; Qr factorization; QR Decomposition; 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 orthogonal matrix Q and an upper triangular matrix R. QR decomposition is often used to solve the linear least squares problem and is the basis for a particular eigenvalue algorithm, the QR algorithm.