Articles and related methods, the article having an enclosed area at least partially surrounded by a visible light-transmissive protective film comprising a first visible light-transmissive flexible film, a second visible light-transmissive flexible film, and a visible light-transmissive patterned conductive layer interposed between the first visible light-transmissive flexible film and the second visible light-transmissive flexible film, the visible light-transmissive conductive layer comprising a dispersion of metal nanowires within a polymeric matrix having an average pore size among metal nanowires that is impenetrable by electromagnetic radiation having a wavelength greater than 1 mm.