Me  and  a  friend use VNC to run a graphically-intensive program over
   the  internet.  Despite  the  fact  that  we  both  have  2Mbit  cable
   connections, whoever's running the client gets the window update about
   once  per  second.  Now  the  thing  is,  we both have this exact same
   program.  So,  theoretically,  there  could  be  a way of sending only
   keystrokes and mouse positions across the line when we're both running
   the  same program. Since the programs have exactly the same responses,
   VNC doesn't need to send the graphics along, and we get no choppiness.
   To  avoid  desyncing  problems,  mouse  and keyboard settings from the
   server   should   be  adopted  by  the  client  until  the  connection
   terminates.  Once  in  a  while,  VNC  would  take screenshots of each
   program,   and  if  they  are  not  exactly  the  same,  indicating  a
   discrepancy  between  program  responses, it would fall back to how it
   operates now and give a warning message.

   Thoughts?
     _________________________________________________________________

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