As another poster mentioned about the ReMarkable, the Boox works just fine offline. I do use mine online, e.g. for reading HN as I prefer the E-Ink screen for text. But as for note-taking, everything I do is offline, including moving the PDF documents to the desktop via ADB.
See:
- https://www.mozillafoundation.org/en/privacynotincluded/onyx...
- https://www.reddit.com/r/ereader/comments/13e8bw3/psa_onyxbo...
- https://news.ycombinator.com/item?id=23735962
- https://news.ycombinator.com/item?id=31247982
- https://news.ycombinator.com/item?id=37665408
- https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2F0...
etc...
I just wrote to the company in the Feedback feature of the device, asking about where the privacy policy can be found and giving an example of where the privacy policy is found in my Samsung device.
Thank you for making me aware of the issue. I was vaguely aware that there were GPL concerns with Boox, but I did not realize that there is no stated privacy policy - technical potential for exploitation aside.