An apparatus for processing high frequency signals comprises a circuit board has a trace. During device manufacture, each of the stacked die is assigned a unique identifier or \u201cDie ID\u201d relative to the other stacked die in the package. At least one search including selected clues from the plurality of clues is included in the book. In some instances, at least some of the hyperpolarizable molecules may include an electron donating group that is bonded or otherwise linked to the p-type electrode as well as an electron accepting group that is bonded or otherwise linked to the n-type electrode. The rear-view unit is completely clad by an air pocket of the airbag device.