With properties like:
  • E-ink display
  • usb, sd card for transferring files
  • usable without account and wifi
  • customizable (font size, etc.)
  • buyable with Bitcoin a plus
So far I unfortunately only encountered spy or crappy readers out there :-(
There's the Open Book, which you can build yourself. https://github.com/joeycastillo/The-Open-Book
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My current ebook reader "Krüger&Matz Library 4" belongs to the second category: crappy. It always displays the date and some kind of ebook type on every page; such useless information when reading a book. At least you can use it offline.
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Remarkable
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It says
View, sync, and refine using our apps
And also:
Access, sync, and store files with cloud storage services
They only list Google Drive, MS OneDrive, and DropBox.
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Officially. But there's a huge hacking community around it where you can self host the syncing service.
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This.
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Isn't this the one based on Linux?
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Yup. There's a whole enthusiast community around it with plugins and stuff.
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I've bought these, used - Amazon Kindle D01100 4th Gen. I transfer books with a cable, and don't login to wifi. Works great.
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I'm also watching https://www.pine64.org/pinenote/. The product is not yet finished and currently not available, but promising.
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What about the Kindle 1st gen?
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