Holographic screen
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"Holographic screen" is a title based upon conjecture.
Check the behind the scenes section, the revision history and discussion page for additional comments on this article's title.
A holegraphic screen was a component in the TARDIS that in a way replaced the screens of earlier control rooms which had screens attached to the console. It worked similar to the telephone, but had a visual feed that showed who called.
It could he extended out from the console by a metal arm. (TV: Praxeus)