KDE Dot News has an item about a gesture recognition project for KDE. "KGesture works as advertised, and is almost as fun as the now discontinued
KVoiceControl, but it does need a little more fuzzy logic before it becomes practical
enough. I did manage to get it to work for simpler gestures -- I can draw an
L-shape on my desktop and a dot.kde.org window will pop up."
May 24, 2001