The guy who runs Armadyne has a word like "RICH E" or "RICHE" on his face. What exactly is the word, and why is it on his face?
The word on John Carlyle's face is RICHE, which is French for rich. He also has some sort of "branding" on his forehead, so I believe that these are a form of body modification (the proof of citizenship branded on the characters' arms appear to be of the same type).
It is my interpretation that language is used as a device to further separate the two classes; Jessica Delacourt spoke French while at the social gathering. The wealthy citizens of Elysium speak French, while the poor citizens of Earth speak Spanish.