This kind of exists with things like RocketBook and Neo smartpens. They require special books for the latter:

https://shop.neosmartpen.com/collections/journals-notebooks/...

LLMs are good enough that if you can stand up a small video capturing app on your iphone, then you can live transcribe. I believe the LLMs are good enough that if you just write legibly, then you can give it ad-hoc commands in any way you want (e.g "Add this to iCal").

A cheap document reader gets your half way there:

https://www.amazon.com/Kitchbai-Document-Visualiser-Micropho...

I'm expecting something like this to be part of the suite of devices OpenAI will release. Shifting away from tapping things into phones all the time to leveraging all of the mechanical things we do outside of phones.

The product would be an aesthetic document scanner with a mic, so you can make comprehensive notes with additional voice transcribing. Seems like an ideal thing to have on a scratchpad desk for quick notes, because eink note-takes are actually really good now days (just overpriced).