Hello, I'm making a system for education on linux using xf4vnc. ( http://sourceforge.net/projects/xf4vnc ) In this system, teacher accesses student's desktop by vncviewer. I want to make a software that can lock student's operation(keyboard, mouse), but not teacher's operation. I have some idea but not researched yet 1. hook in kernel keyboard/mouse driver This have to make kernel patch, so can't distribute by packages. 2. hook X protocol I don't know deeply about XFree86, so I don't know how to hook... 3. make a invisible screensaver( fullscreen application ) It locks student but not teacher, I don't know how to make it... Do you have any ideas? Best regards -- Mitsuaki Uehara _______________________________________________ XFree86 mailing list XFree86@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xfree86