Coin Operator

 is a perk in the Fallout: New Vegas add-on Dead Money.

It is received from Christine as part of her dialogue: several Medicine, Perception and Intelligence checks are necessary, along with polite responses.

Effects
The result is Christine teaching the Courier a Workbench recipe to make "slugs" that the vending machines scattered over the Sierra Madre will accept: 1 Fission battery plus 2 Scrap metal = 50 Sierra Madre Chips.