QR code (Quick Response Code) is the trademark
for a type of matrix barcode (or two-dimensional barcode) first designed 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. A QR code uses four standardized encoding modes
(numeric, alphanumeric, byte/binary, and kanji)
to efficiently store data; extensions may also be used.
The QR code 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
Comments
Post a Comment