X11vnc on the kids machine and then use the options of the vnc client so that it doesn't use the keyboard and mouse.  That's always worked well for me in similar situations.

Brian Cluff

On February 14, 2015 6:18:19 PM MST, Wayne Davis <waydavis@centurylink.net> wrote:
>
>  I want to monitor the screen of a machine remotely _AND_ covertly - 
>Both machines on same network, both running Kubuntu 14.10
>
>Child on machine.
>
>Suggestions?
>
>
>
>
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