QR Codes:

Our teacher has told us to look for some informarion about QR Codes, ok here you have a little summarize:

A QR code (quick response code) is a useful module that stores information in
a set of points or a bidimensional barcode created by the Japanese company
Denso Wave in 1994. It has three squares in the corners that allows to detect
the code’s position.

QR codes can be read from the PC, smartphone or tablet using screen captures
devices like scanners or cameras, we also need programs that are able to read

QR data and a connexion to the Internet for the directions web.