The nook (new & old) uses ePub. The DRM used is two different ones. B&N has their own flavor DRM that is used for eBooks bought via B&N. But the nook also supports the same ePub DRM that Sony, Kobo, and many others do including Overdrive. A nook will allow you to read ePub bought from B&N as well as ePub bought from Sony or Borders or BooksOnBoard.
|