The Prefix Codes are used in Star Trek 2: The Wrath of Khan famously to subdue the USS Reliant. They also feature again in several other Star Trek adventures from Picard to The Next Generation but what are they and what is the real life basis for the security encryption? Let's take a look.

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Star Trek, Star Trek Enterprise/Voyager/Deep Space Nine/Discovery/Lower Decks/Picard/Prodigy and The Next Generation are all owned and distributed by CBS.
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Image stills are from Trekcore
This Video is for critical purposes with commentary.