QRAFTER - Free This app is a QR code reader. What makes it different from all other QR readers is that you can also create QR codes within the app for a $2.99 upgrade purchase within the app. What is a QR code you ask? You see these on advertisement pages in magazines. It is a quick way to get your information out there without taking up a lot of space. For education, you might create a worksheet & put a QR code at the bottom that contains a link to all of the answers for self checking. It is also a quick way for students to go to the same website on their smartphones. Click here for more information.
Google has a free QR Code generator - click on the link to access: http://createqrcode.appspot.com/