Tools

A QR code is a "quick response" code. It is a matrix bar code which can store information. These can be read with QR reader software or apps and created online or via apps.

QR Readers

QR Reader software for Windows, Mac or Linux computers (desktop or laptop machines must have a webcam or a built-in cam to use): QRReader http://www.dansl.net/blog/?p=256

QR Reader app for Android, iOS, Windows and Blackberry devices with cameras:

http://www.i-nigma.com/Downloadi-nigmaReader.html

QR Reader apps for Android devices with cameras:

QR Droid: https://market.android.com/details?id=la.droid.qr&hl=en

QR Reader Droid: https://market.android.com/details?id=uk.tapmedia.qrreader&hl=en

QR Reader apps for iOS devices with cameras:

i-nigma: http://itunes.apple.com/app/i-nigma-4-qr-datamatrix-barcode/id388923203?mt=8

QR Creators

Online

http://delivr.com/qr-code-generator

http://www.qrstuff.com/

http://goo.gl/

http://qrcode.kaywa.com/

A Firefox Addon: https://addons.mozilla.org/en-us/firefox/addon/mobile-barcoder/

Special

QRVoice http://qrvoice.net/ Creates a "speaking" QR Code using text-to-speech
TagMyDoc http://www.tagmydoc.com/ Creates a QR code to download a file

Educational Implementation Ideas:

Five Lovely Tools