Touchless SDK

The Touchless SDK will enable developers to create multi-touch based applications using a webcam for input. Touch without touching.
Touchless started as Mike Wasserman’s college project at Columbia University. The main idea: to offer users a new and cheap way of experiencing multi-touch capabilities, without the need of expensive hardware or software. All the user needs is a camera, which will track colored markers defined by the user.
Mike presented the project at the Microsoft Office Labs Productivity Science Fair, Office Labs fell in love with it, and Touchless was chosen as a Community Project. Our deliverables include an extensible demo application to showcase a limited set of multi-touch capabilities, but mainly we are delivering an SDK to allow users to build their own multi-touch applications.
Now, Touchless is released free and open-source to the world under the Microsoft Public License (Ms-PL) on CodePlex. Our goals are to drive community involvement and use of the SDK as it continues to develop.
Remember that this is just the beginning; and youre invited to join our journey. Send us your questions and feedback, use Touchless SDK in your .NET applications and XNA games, and support the community by contributing to the source code.System requirementsVisual Studio 2005 or 2008, or Visual Studio Express Edition
.NET 3.0 or greater
"TouchlessLib.dll" and "WebcamLib.dll"