Board Thread:Naruto Discussions/@comment-26993711-20160205011621/@comment-3965545-20160208183834

You know that's actually quite interesting.. Madara never showed the ability to deactivate his Rinnegan in life, only as an Edo Tensei has he done it.. and in all other material except for the Last, Sasuke cannot deactivate his Rinnegan. Maybe the Rinnegan simply cannot be turned off by the living for some reason.