"A QR Code (it stands for "Quick Response") is a mobile phone readable bar code that can store website URL's, plain text, phone numbers, email addresses and pretty much any other alphanumeric data. The QR Stuff QR Code Generator allows you to create either dynamic or static QR codes and download them for immediate use."
Below is the official QR code for Winchester School P.S.H.C.E.E. blog, to which you can easily get access to by scanning the below given QR code.