Short version: a woman (man?) appearing in behind-the-scenes footage of Charlie Chaplin's "The Circus" appears to be talking on a mobile phone. Details in the video below.
Even if the person is a time-traveler, they aren't talking on a mobile phone since it's unlikely there were time-traveling cell towers in 1932. Most likely it's some sort of satellite phone or radio communicator a la Star Trek. Anyway, very strange. Some people have suggested that it could be a hearing aid, but it sure doesn't look like one, and why is she speaking into it to herself?
