@paul Ooh what a great topic! In my #screenless research I found these two books:

Markus Krajewski's "Paper Machines": https://mitpress.mit.edu/9780262550857/paper-machines/

Cornelia Vissmann's "Files": https://www.sup.org/books/media-studies/files

I also have a really fascinating catalog from a library exhibition, mostly in German but if you can find it, I think you might find some of the images and references inspiring: https://www.amazon.de/Zettelk%C3%A4sten-Maschinen-Phantasie-Sonderausstellungen-Schiller-Nationalmuseums/dp/3937384855#detailBullets_feature_div

Look forward to seeing what you discover!

@jk There's the "SmartPen" devices from Moleskine, Neo & Livescribe (and perhaps others). They have a camera in the end of the pen and use a special type of paper with micro-printing that converts to X-Y coords and page number. The notebooks are kinda pricey but you can print and bind your own with a laser printer. The professionally printed ones work better though. It's kinda fun.

They are fancy novelty things for most people so you can often find them used much cheaper.

A friend and I made a #screenless content management system for the moleskine pens some years back. We found specs for the proprietary vector data format and were able to convert it to SVG and sync it to a web site.

http://penpub.ink/

The code is here: https://gitlab.com/bhowell/penpub