![]() ![]() Uses Ī QR code used on a large billboard in Japan, linking to the sagasou.mobi website The open-source " ZXing" project maintains a list of QR code data types. Japan's NTT DoCoMo has established de facto standards for the encoding of URLs, contact information, and several other data types. May 2022 – ISO/IEC 23941:2022 Information technology – Automatic identification and data capture techniques – Rectangular Micro QR Code (rMQR) bar code symbology specification ĭefines the requirements for Micro QR Code.Īt the application layer, there is some variation between most of the implementations.Renames the QR Code 2005 symbol to QR Code and adds clarification to some procedures and minor corrections. 1 February 2015 – ISO/IEC 18004:2015 Information – Automatic identification and data capture techniques – QR Code barcode symbology specification.Does not specify how to read QR code model 1 symbols, or require this for compliance. 1 September 2006 – ISO/IEC 18004:2006 Information technology – Automatic identification and data capture techniques – QR code 2005 bar code symbology specification (now withdrawn) ĭefines QR code 2005 symbols, an extension of QR code model 2.June 2000 – ISO/ IEC 18004:2000 Information technology – Automatic identification and data capture techniques – Bar code symbology – QR code (now withdrawn).October 1997 – AIM (Association for Automatic Identification and Mobility) International. ![]() There are several standards that cover the encoding of data as QR codes: Structure of a QR code (version 7), highlighting functional elements ![]() In September 2020, a survey found that 18.8 percent of consumers in the United States and United Kingdom strongly agreed that they had noticed an increase of QR code use since the then-active COVID-19 related restrictions had begun several months prior. Some 58% of those users scanned a QR or barcode from their homes, while 39% scanned from retail stores 53% of the 14 million users were men between the ages of 18 and 34. ĭuring the month of June 2011, 14 million American mobile users scanned a QR code or a barcode. The QR code has become one of the most-used types of two-dimensional code. ![]() There are a great many QR code generators available as software or as online tools that are either free, or require a paid subscription. QR codes may be used to display text to the user, to open a webpage on the user's device, to add a vCard contact to the user's device, to open a Uniform Resource Identifier (URI), to connect to a wireless network, or to compose an email or text message. QR codes are now used in a much broader context, including both commercial tracking applications and convenience-oriented applications aimed at mobile-phone users (termed mobile tagging). QR codes can be displayed on buildings, such as this one being painted in Cape Town. The required data is then extracted from patterns that are present in both horizontal and vertical components of the image. Ī QR code consists of black squares arranged in a square grid on a white background, including some fiducial markers, 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. Applications include product tracking, item identification, time tracking, document management, and general marketing. The quick response system became popular outside the automotive industry due to its fast readability and greater storage capacity compared to standard UPC barcodes. QR codes use four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data efficiently extensions may also be used. In practice, QR codes often contain data for a locator, identifier, or tracker that points to a website or application. A barcode is a machine-readable optical label that can contain information about the item to which it is attached. QR code for the URL of the English Wikipedia Mobile main pageĪ QR code (an initialism for quick response code) is a type of matrix barcode (or two-dimensional barcode) invented in 1994 by Japanese company Denso Wave. ![]()
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