3 and 4 finger gesture Multi-touch support is possible
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tawsi
Apparently people have found that the earlier MacBooks from Apple also support 3/4 finger gestures or "multi-touch" by installing a couple files from the MacBook Air installer, editing a .plist preference file and then fixing permissions.... Can this hack be added to this project to give early MacBook users full Multi-touch support? Is it also possible that the PowerBooks which support absolute mode scrolling could also get multi-touch support too?
FMI, see:
http://www.modmyi.com/forums/mac-news/409751-four-finger-gesture-hack-older-macbooks.html
Here is more technical info:
http://www.mactips.org/archives/2008/11/17/how-to-enable-four-finger-gestures-on-pre-oct-2008-mac-notebooks/