Do not mind: the non-calibrated touch points!
I've built a "Hello World"-like demo to test the features of TUIO-AS3-lib (http://code.google.com/p/tuio-as3-lib/). It is distributed in either Source or SWC (external component for import).
The demo instantiates 3 string objects, they are assigned to an array that is check everytime a touch event arrives in TUIO-AS3-lib listener - this way for each object the colision is detected.
I use CCV (tracker) & an ActionScript 3 project (that imports the external SWC of the lib).
Some thoughs about TUIO-AS3-lib: interesting project if you just need to listen to the events and implement your interface on top. Simple and plain code, easy to follow. Although it does not implement the same level of features as a full scaled multitouch framework like touchlib (http://nuigroup.com/touchlib/) that offers scalableObjects, rotatable, and so on...