More Examples

“Be sure to double-check the URL in the QR Code.”

“Scan this QR code with your phone to send me bitcoin.”

“I paid with my phone by scanning the bitcoin QR code at the register.”

Definition(s) from the Web

  1. If you sell things in a brick and mortar shop, customers can pay using hardware terminals, touch screen apps or simple wallet addresses through QR Codes… You can use a dedicated app or webapp that generates a QR code on the fly including the amount. Many wallets directly support QR code scanning for payment. Source
  2. QR-Codes are commonly generated by websites, wallets, and Bitcoin applications, for making Bitcoin payments to Bitcoin addresses using smartphones, which commonly come pre-installed with QR-Code reading software. Typically these QR-Codes are generated by the same wallet that generates the public Bitcoin address. Converting a cryptocurrency wallet sending or receiving address into a QR code format is an easy way of making or receiving payments. Many cryptocurrency wallets and apps support the scanning of QR codes. Source
  3. A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached. In practice, QR codes often contain data for a locator, identifier, or tracker that points to a website or application. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data efficiently; extensions may also be used. The Quick Response system became popular outside the automotive industry due to its fast readability and greater storage capacity compared to standard UPC barcodes. Applications include product tracking, item identification, time tracking, document management, and general marketing. A QR code consists of black squares arranged in a square grid on a white background, which can be read by an imaging device such as a camera, and processed using Reed–Solomon error correction until the image can be appropriately interpreted. The required data is then extracted from patterns that are present in both horizontal and vertical components of the image. Source

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