Board Thread:General Discussion/@comment-188.119.3.171-20140309192732

SCP-005 is also called the skeleton key, and it has the ability to open any lock, be it mechanical or digital, with its properties left unexplained, including how its ability works.

I'm pretty sure the thread predates Skyrim though I'm not sure if oblivion or morrowind had Nocturnal's key.

Sure, skeleton keys also exist IRL but it's still a man's dream to see a reference between two random stuff, even though there may be none. 