QR Code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional code) first designed for the automotive industry. More recently, the system has become popular outside the industry due to its fast readability and large storage capacity compared to standard UPC barcodes. The code consists of black modules (square dots) arranged in a square pattern on a white background. The information encoded can be made up of four standardized kinds ("modes") of data (numeric, alphanumeric, byte/binary, Kanji), or through supported extensions, virtually any kind of data.
--- Wikipedia
And go through following websites and you will get what is QR and How to use it for Libaries
http://en.wikipedia.org/wiki/QR_code
http://www.libsuccess.org/index.php?title=QR_Codes
http://www.bryanloar.com/2011/02/qr-codes-in-libraries.html
and
Ryerson University Library using this technology
http://www.ryerson.ca/library/qr/index.html
-- Thirunavukkarasu Chandran
tcnt@in.com
