Barcode/QR code reader AIR native extension, that uses the ZBar library. It uses Zbar 0.2 for Android and Zbar from http://code.google.com/p/qr-zbar-ane/ for iOS.
For details and installation instructions see the wiki page. The actual .ane file is at zbar-ane /builddir/zbar.ane , you need this if you just want the project and dont want to mess with the source.