QR Codes(Quick Response) Code similar to that of a barcode, in the way that information is stored and is retrieved using a scanner. Mobile Applications make the retrieval of data much more accessible. Using the website http://www.qrstuff.com/ you are able to embed a Website URL, Twitter Account, iTunes Link or App Download to name but a few into a QR Code!
There are many online tools for creating QR Codes, which you can then use in your classroom. I tend to use QR Stuff.
I have recently started using ClassTools for generating QR Treasure Hunts:
QR Codes @ Seisen!
Blogging @ Seisen
Blogging @ Seisen official launch tomorrow! Signage is ready #seisenblogs' pic.twitter.com/D96a1izxJ3— Mr Towse (@MrTowse) September 22, 2015