The exemplary embodiments provide a computer-implemented method, apparatus, and computer-usable program code for managing memory. The method of one embodiment comprises combining an ad input file with a conduit file to create an integrated ad file, wherein the ad input file identifies at least the content of the ad and the conduit file identifies at least the tracking data for the ad. A detector receives the at least three wavelength dependent two-beam interference signals and outputs an electrical signal representative of each wavelength dependent two-beam interference. The chip stack includes a first chip with circuitry on a first side, a second chip coupled to the first chip by a grid of connectors, and a thermal interface material pad between the chips.