PDF file - Google translate: <a href="http://emwee.de/wp-content/uploads/2008/03/20080301_aktiv-2008-05_2d-codes-idw-koln.pdf" target="_blank">http://emwee.de/wp-content/uploads/2008/03/20080301_aktiv-2008-05_2d-codes-idw-koln.pdf</a> <a href="http://www.aktiv-online.info/Default.aspx" target="_blank">http://www.aktiv-online.info/Default.aspx</a> <a href="http://emwee.de/2008/03/05/aktiv-artikel-zum-download/" target="_blank">http://emwee.de/2008/03/05/aktiv-artikel-zum-download/</a> Who is a 2D code via mobile phone, and then snaps in the Graphic hidden information, makes mobile tagging " (The English word art). Needed is twofold: a modern photo-phone with Internet access - because Many codes call "only" a Web address (URL) to - and A special software ( "Reader"), the current codes Decipher. The program has been on the mobile phone Loaded. Many good readers are free, are seriously Among other things, these suppliers: <a href="http://reader.kaywa.com" target="_blank">http://reader.kaywa.com</a> - <a href="http://www.Neoreader.com" target="_blank">http://www.Neoreader.com</a> - <a href="http://i-nigma.com" target="_blank">http://i-nigma.com</a> - <a href="http://www.quickmark.com.tw" target="_blank">http://www.quickmark.com.tw</a>