Dear Jukka,
 
Some obvious ways to indicatee futuristic aspects of a script would be to
use computer-generated holographs to project images, and the use of
robotics.  Both of these weere used in _Star Wars_, but theey were also
used in Scifi novels.  One series that comes to mind includes _Beyond the Blue
Event Horizon_ and _Stargate_.    Good luck woth the script.
 
Frank Booker