Some books in Skyrim are written by NPCs that exist in the game, but there is no interaction based on the fact that you bring a book to its author. That is - there was no such interaction, as this mod adds it!
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Removed a mention to a not existent and not used script. Logs should be cleaner now. You can skip updating if v1.2 works for you.
Version 1.2
The issue with Taron Dreth not signing the book should be fixed now.
Version 1.1
Added "Chaurus Pie: A Recipe" by Nils
Version 1.0
Original version
If you have a book in your inventory and talk to the book's author, you can ask to sign it. And they will sign them. That's it. Immersive.
Technically signed books are separate object, so if you have a mod changing book records, you would need a simple patch. Synthesis patches should handle that automatically.
The list of covered books:
"A Gentleman's Guide to Whiterun" by Mikael
"Children of the All-Maker" by Tharstan
"Dwarves I, II, III" by Calcelmo
"A Primer on Enchanting" by Sergius Turrianus
"Ghosts in the Storm" by Adonato Leotelli
"Olaf and the Dragon" by Adonato Leotelli
"Ruminations on the Elder Scrolls" by Septimus Signus
"Shadowmarks" by Delvin Mallory
"The Aetherium Wars" by Taron Dreth (I know)
"Chaurus Pie: A Recipe" by Nils
The esp is flagged as esl. I did not add signs containing player's name as it requires spawning books and I am not sure I can do that without compromising the esl flag.