For people who want to use QR Codes within the Flash environment, LOGOSWARE (the company I work for) has released a QR Code Reader into the Spark Project.
It is essentially a library that recognizes and decodes any QR Code from any image source.
J. Mori, T. Tsujishita, Y. Matsuo, и M. Ishizuka. International Semantic Web Conference, том 4273 из Lecture Notes in Computer Science, стр. 487-500. Springer, (2006)