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Showing posts from January, 2021

10. WHAT IS QR CODE? | INTRODUCTION,HISTORY,STANDARDS,USES AND MANY MORE

  QR code 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,