I recall a thread about this a while ago (or was it chatter at dinner?);
this may have already been mentioned, but there is a project called
wayV for doing gesture based input. Check it out at:
http://www.stressbunny.com/wayv/
it seems to have quite a few modes of operation and is highly
configurable. If anyone has some experience with this or tests it out,
it'd be great to hear about it.
Conrad.
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