On the Effectiveness of Aluminium Foil Helmets: An Empirical StudyAli Rahimi1, Ben Recht 2, Jason Taylor 2, Noah Vawter 217 Feb 2005 1: Electrical Engineering and Computer Science department, MIT. 2: Media Laboratory, MIT. Abstract Among a fringe community of paranoids, aluminum helmets serve as the protective measure of choice against invasive radio signals. We investigate the efficacy of three aluminum helmet designs on a sample group of four individuals. Using a $250,000 network analyser, we find that although on average all helmets attenuate invasive radio frequencies in either directions (either emanating from an outside source, or emanating from...
