Comment 15 for bug 1041874

I notice that when I uninstall xf86-input-synaptics, I get my desired actions. However, this is not because of multitouch, because that still lacks when there is no driver.
When no driver is loaded, the bottom part of my clickpad is not detected as a touch area. It is still detected as clickable, but not for touch. This way, it acts as a traditional touchpad with physical buttons.
This is how my clickpad acts on windows 7.

http://i48.tinypic.com/20f3pch.png
http://www.blogcdn.com/www.engadget.com/media/2010/05/hppavilionhands-on05.jpg

The touch is my clickpad. The bottom is a popular clickpad used by HP laptops.
For my clickpad specifically, I want the bottom part to not be touch-detected.
Is there a way to detect these areas out-of-the-box using the synaptics driver?
Is there some configuration to achieve this?