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).
Director Blomkamp explains in an interview about product placements, "We did make up our own brands because we couldn’t get enough of them," Blomkamp explains of labels such as "Riche," a moniker that is branded onto the skin of characters who have partaken of a beauty enhancement. "We had a binder with thousands of fake brands and awesome logos. But they don’t mean anything to people, they just look like future brands. It doesn’t have the same resonance."
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.