Moving two different scrollviewers at the same time with two fingers

Question

I have two different scrollviewers and I want to be able to manipulate with both at the same time. I draw the situation on the link beneath:

Somehow my phone can detect only one finger at a time. How do I change this?

Answer 1

You need to look at the XNA api's (i.e. what the game dev's use) to do this sort of thing.