A method of predicting ambient air temperature outside a passenger compartment of a vehicle. The frame-protector sidewalls may be connected together via a frame-protector bottom wall. An event such as launching an application is generated based on identifying the first print portion in the area of the optical surface. The cap houses the CIK, simultaneously providing a storage mechanism for the CIK as well as keeping the CIK obscured from plain view and visual detection. The etching step can be accomplished simultaneously with a step of etching back a patterned oxide layers, such as a shallow trench isolation layer.