Re:TRAITOR (Score 1)

I have no idea - all I know is that I've known this fact for so long I can't remember when or where I heard about it. It's on the wikipedia page for "computer printers" for pete's sake - maybe you can search the change logs to see who added it and when. There's even a page called "printer steganography" that references a PC World article from 2004. Actually, I can remember where I was working at one point when I had a discussion of this trivia, so that would have been between April-December 2001.