The TouchLocation structure contains information, such as screen location, current state, and amount of pressure for a registered touch location item.
The TouchLocation structure contains information, such as screen location, current state, and amount of pressure for a registered touch location item. A collection of current touch locations is stored in the TouchCollection object of the touch screen device.
Link: http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.input.touch.touchlocation.aspx