Most ebook readers use some version of Linux, with some running the GNU/Linux OS. "This puts ebook readers closer to freedom than any other device," notes a call-to-action in Free Software Foundation Bulletin. However, due to e-ink screens as well as DRM-laden ebooks, closing the gap will require significant effort. The article warns that ebook DRM is becoming more restrictive over time. It's not uncommon for textbooks to require an uninterrupted Internet connection and load only a limited number of pages at once. Canopy and other 'lending' services put an artificial lock on digital copies, making it impossible for libraries to access them.
