Emergency holographic program

An emergency holographic program was a hologram designed to fill a particular function aboard a starship or space station in the event of an emergency. These programs were not meant to be used continuously and originally required a crewmember to activate them, though later programs were able to active themselves if the computer detected an emergency. (Star Trek: Voyager; Star Trek: Picard)

These holographic programs were introduced by Doctor Lewis Zimmerman.

Doctor Lewis Zimmerman, considered the father of modern holography.

USS Voyager's EMH, The Doctor.

Mister Hospitality, La Sirena's EHH.

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