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I can't recall which reader app I used, but I've seen this done before in ages past.

No AI, so no big concept of inferred identities, but if someone's referenced by name you could long-tap the name, and get a list of all previous references in the text. Super useful for referencing secondary characters in super-long epics like The Wheel of Time.




I'm really bad with names. I almost wish for unique color highlighting for every name. I would remember previous scenes or conversations way better than keeping track of tons of character names.


It would be amusing if the AI inferred the identity of a mystery character before they were revealed.


Some printed books has that. It’s called the dramatis personae. Everyone not listed in it is not important. So not even tech is needed for that.


Some kindle books have the X-ray feature that does exactly this.




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