Board Thread:General Discussion/@comment-11445272-20140115065601/@comment-24811351-20140825150611

Since Shin used his Geass on Akito over ten years ago, at a time when Lelouch didn't have a Geass himself, that is obviously impossible. Therefore, Shin has his own ability, however similar to Lelouch's it might be. The "thing" that looks like an eyepatch is indeed an eyepatch, hiding the permanently active Geass of Lelouch aka Julius (although it was completly deactivated in R2, which could mean that Julius is aware of Geass and even allowed to use it by Charles).