Originally Posted by schorsch-lukas
on the device, if rooted
you can access
notes and apparently svg-drawings? here:
also some SQlite .db files here:
You don't need to be rooted to access those. And the OP is more asking about the desktop app.
Sounds like you are on OS X? If so, the DB is now here:
/Users/<username>/Library/Application Support/Sony Corporation/ReaderDesktop/ReaderDesktopLibrary.db