Described is an improved trigger assembly for use in an electronic device. The trigger assembly includes a pressure sensitive member and a trigger button. The pressure sensitive member includes two or more conductive lines. The pressure sensitive member is secured to a portion of the mobile terminal. The trigger button is secured to the mobile terminal in a manner such that a force applied to the trigger button causes a resultant force to be applied on the pressure sensitive member. The force applied on the pressure sensitive member causes a change in an electrical property between at least two of the conductive lines. A module measures the electrical property between the conductive lines. A function of the device is initiated depending on a comparison of the measured electrical property to a threshold value.