Keep hearing about or seeing QR symbols? Here is a RocketBoomTech video that gives background and how to create your own. At the end, it shows how to create one using Google (Goo.gl). Another way to create one is Bit.ly
The Daring Librarian uses QR. Middle School Teacher Librarian asks students to dring their cell phones to the library, form small teams, and hunt for QR codes posted around the library -- along the lines of a treasure hunt. Some QRs lead to wiki or web pages that have students do certain tasks. Prizes include iTune gift cards.
Try the QR to the right and see where it takes you!