A structure and method are provided for forming a collar surrounding a portion of a trench in a semiconductor substrate, the collar having a lower edge self-aligned to a top edge of a buried plate disposed adjacent to a lower portion of the trench. Lighting that illuminates one or some of the partial regions, the interior region or the slit region of the card entry slot, for example, can also be arranged, thereby also improving the image. A second pressure sensor detects variation in pressure of the blow-by gas, which is generated by the butterfly valve. In some implementations, the volume of video data monitored from the stores and from the cameras within the stores can be narrowed or reduced by monitoring substantially only the video data from the stores and locations within the stores that were identified as potential targets in the trend of theft.