MultiTouch support

In Windows 7 we have enriched the Windows experience with touch, making touch a first-class citizen as another way to interact with your PC alongside the mouse and keyboard. In recent years, we have witnessed a wide range of multitouch devices that have generated an extremely positive user experience. Therefore, it is only natural for Windows to introduce such multitouch support in Windows 7 as a core capability.

For more info read about MultiTouch Capabilities in MS web.