The invention concerns a spectral ellipsometer having a refractive illuminating optical system that is equipped with a small illuminating aperture and is designed for a wide wavelength region. A fastener track is applied in-line with a plastic web and is bonded thereto at the same time that a peel seal is formed. Then, based on the determined terminal node characteristics, an algorithm and one or more control parameters are selected for processing a fingerprint. The controller detects the presence, in a wireless transmission from a remote device, of one or more parameters identifying one of the plurality of configurations. Customized messages may be provided to the wireless device.