Con

RPG Information (FFG)
Con was a Trade Skill Approach of the Air Ring, which revolves around understanding the value of things better than everyone else and then ruthlessly exploiting this advantage to get something for nothing. It can be used to manipulate people's perception of an item's value, getting them to pay more for it or making it easier to steal it. This approach also governs most criminal activity that falls into the category of theft (from pickpocketing to embezzlement), bribery, and smuggling.