Get started using the Windows7 API in Unity. Not TUIO. Supports Windows 7 multi-touch. This system is very similar to Unity's own syntax:
Unity API: Input.GetTouch(0);
Win7MT API:Win7Input.GetTouch(0);
Unity API:Touch;
Win7MT API:Win7Touch;
Getting started is easy. Just add Component->Script->Win 7Touch Manager to a GameObject, then add "using Win7MT;" in your script.