QR code
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A QR code, short for quick-response code, is a type of two-dimensional matrix barcode invented in 1994 by Masahiro Hara of the Japanese company Denso Wave for labelling automobile parts. It features w
QR codes can be displayed on buildings, such as this one being painted in Cape Town.
A QR code printed on the packaging of a cola can, linking directly to the Pepsi website, so the user is not required to manually enter the web address
QR codes may appear in very public places such as this large billboard in Japan; this one links to the sagasou.mobi website.
QR codes have been used and printed on train tickets in China since 2010.
Data Matrix
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A Data Matrix is a two-dimensional code consisting of black and white "cells" or dots arranged in either a square or rectangular pattern, also known as a matrix. The information to be encoded can be t
QR code
…Aztec Code Data Matrix High Capacity Color Barcode…
A Data Matrix on a Mini PCI card, encoding the serial number 15C06E115AZC72983004
Reading Data Matrix code with mobile phone (Wikipedia's former Semacode project)
Industrial Data Matrix code readers