IQOS, Philip Morris's new heat not burn tobacco device, explained Vox Independent Research Needed to Understand Risks of IQOS Tobacco Heating Device School of Public Health University of Minnesota Factors that influence smokers' and ex smokers' use of IQOS: a qualitative study of IQOS users and ex users in the UK Tobacco Control Philip Morris wanted to market IQOS, a new tobacco device as safer than cigarettes Vox US panel rejects Philip Morris claim iQOS tobacco device cuts disease risk US news The Guardian Philip Morris device knows a lot about your smoking habit