I own the BOOX Note 2, it's an android tablet with some E-Ink friendly modifications. It's the best electronic reading experience I've ever had:

- It's 10.3", perfect for reading PDFs like scientific papers without being too large to carry around.

- The included reader is stellar, with special modes for reading PDFs, comicbooks, etc.

- The included note-taking app is pretty good and fully featured. It integrates with the reader and there's a side-by-side mode.

- It supports every open format I've tried: PDFs, DJVU, epub, mobi and more. (Haven't tried PS.)

- I can scribble on all document types, including ebooks.

- I can install apps from the app store. In particular this means I can read my Kindle library and Wallabag feed, and...

- with Syncthing syncing is set and forget. When I download a PDF or book on my computer, I simply pick up the tablet and start reading it. Any notes I make are synced back to my laptop.

- Of course, the above is in addition to the standard E-Ink features you'd expect: It lasts for weeks on a charge, the reading experience in bright sunlight is fantastic, it's lighter than an iPad, zero eye strain, etc.

I installed only the software I need for reading and syncing, but there's a lot more you could do with it since the play store and F-droid are available. You can use it as an external monitor, for instance.

I bought, and returned the Note Air.

The build quality is impressive. I had it for 2 weeks, used it for about an hour daily, and set it to only poweroff after a day of inactivity.

Its battery dropped from 100% to 48% over that time. Yes, I was quite positively impressed.

However, their theft of code (which is what you do, if you do not respect the code license, eg, gpl), the fact that even a brand new model tablet was 3+ monthly Android security updates behind, and the pcaps I took showing all the phoning home, including IPs in China...

Well...

As I said, returned. Quite sad, loved the hardware.

Would it be a security threat to have that on one’s home network?

I’d mostly want it for reading articles online and email newsletters. I could make a burner email account for this purpose.

That seems a tolerable tradeoff, as I don’t consider what I read on HN to be super sensitive. (Though others may reasonable differ there)

The trouble is that it is behind your security perimeter once it is on your home network. It can start discovering other devices, monitoring traffic, enumerating ports and services, etc.

If you're set up for it, you can always set it up on a sandboxed SSID with access only to the internet (or even just to sites you choose, like an FTP server of your ebooks). This is probably a good idea with most sketchy gadgets that "need" access to the "internet" but will probably be off the table in coming years as it gets cheap enough for manufacturers to embed 5g connectivity if they want.

Sounds like a lot of work when the alternative is just using a device that doesn’t spy on you in the first place. For instance, Remarkable is a great e—ink tablet that literally gives you the keys to the kingdom: there’s a UI in the product that gives you the root PW (which is set randomly for each device).

Does remarkable have a web browser or email support? I don’t use chrome so it will be hard to add reader articles. Mostly I want to add them from twitter on ios.

Not as a 1st party feature, but there are several open source tools for doing that: https://github.com/reHackable/awesome-reMarkable