This is a basic implementation of single hand tracking on a PrimeSense/Kinect camera using OpenNI written in Java, which outputs to TUIO.
The app runs as a TUIO server, enabling you to do some PrimeSense fanciness in Flash, Processing or whatever. It sends both 2D and 3D cursor information, so if your TUIO implementation supports it, try using the 3D data.
To recognize your hand initially, perform a wave gesture. When OpenNI finds your wave gesture, the server will start sending TUIO commands.
To run, simply call java -jar handtuio.jar from the build/ folder. You can also specify an alternate port or OpenNI config file with java -jar handtuio.jar -- 3333 my_config.xml.
I have included the required libs for Mac OSX. To run on Windows, you should just have to copy the .dll files from your OpenNI lib folder into the build/lib/ folder.
Cheers!