Web developers can use Silverlight 3 to provide multi-touch functionality. Unfortunately, only Windows 7 supports both Silverlight and multi-touch. This factor greatly restricts the use and promotion of this part of the function, but the situation will change if multiple touch points continue to become popular.
In the ApplicationProgramAdding multi-point touch in is very simple. For basic operations, you only need to respond to the touch. framereported event. This event contains a series of touch points, as well as the information of the fingers that the user touches, moves, or removes. Kevin wolf posted a Quick Start example on his blog.
Kevin wolf also provides a multi-touch game crazy coins. In addition to Silverlight 3, this application also uses the sliversprite framework and the farseer physics class library.
View Original English text:Silverlight 3 is bringing multi-touch to the Web
Reference: http://www.infoq.com/cn/news/2009/10/Silverlight-Multitouch