The invention relates to an insulation system for pipes, containers, ventilation ducts and like installation parts which have an outer surface temperature which periodically is below the dew point of the ambient air. The photovoltaic device includes a transparent conductive layer; a window layer disposed on the transparent conductive layer; and an absorber layer disposed on the window layer. The access member is movable relative to the coupling member such that the access member can be secured to tissue while the coupling member maintains the alignment of the cannulations. Further, the device may control different functions of the primary device based on the usage context. A computing device generates a cryptographic key that is protected with a PIN unlock key provided by an administrative entity. The N vapor channels are formed in the first capillary structure.