A theft prevention device including a housing comprising a base and a cam ring, the cam ring comprising at least one cam; an actuator rotatably coupled to the housing, wherein the actuator has a side wall defining a central space configured to receive an object; a coupler generally between the housing and the actuator, the coupler having teeth configured to engage the object in the central space; wherein the theft prevention device has an engaging orientation in which the coupler contacts the cam and wherein the teeth protrude from the side wall of the actuator.