QR code
From Wikipedia, the free encyclopedia
Not to be confused with Quadratic residue code.
QR code (abbreviated from 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 an optically machine-readable label that is attached to an item and that records information related to that item. The information encoded by a QR code may be made up of four standardized types ("modes") of data (numeric, alphanumeric, byte / binary, kanji) or, through supported extensions, virtually any type of data.[1]
The QR Code system has become 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, general marketing, and much more.[2]
A QR code consists of black modules (square dots) 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; data is then extracted from patterns present in both horizontal and vertical components of the image.[2]
Above I have pasted in some info on What QR codes are. There is heaps of info on them.
QR codes are a really neat way to get information to people quickly.
Most people have seen the square, barcode looking image before, however may not know how to use them! For this technology to be a social media
success, it needs to find away to let people know "how to use them." It's also so very easy to do so, once you know how.
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