A device for extracting zest from a fruit includes a body, a carrier coupled to the body, and a blade coupled to the body. The used printed circuit boards are roasted with plasma at 800 degrees Celsius for less than 10 minutes, thus producing exhaust and residue that contains the precious metal. The controller may also be for performing aligning the authentication data and the enrollment data, matching between the aligned enrollment and authentication data, and spoof attempt detecting based upon corresponding pairs of finger features and their spatial locations in the aligned enrollment and authentication data. As a result, an image corrected based upon the amount of correction set for outdoor use of the camera is displayed.