Filters were a strategy of deception to lessen the fears of those who smoke, and brand advertising often highlighted the technology of filters
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These products range from physical testing, which uses sophisticated vision systems, automatic calibration weighing devices, and 20-channel smoking (linear and rotary) machines for chemical analysis
[5] [6] [7] To avoid this, Japan has introduced a government registered electronic smart card, called Taspo , that allows the user to purchase from the machines
Participants were randomly assigned to receive either text-only or pictorial warnings on their cigarette packs for four weeks, and research staff placed the warnings on cigarette packs that smokers brought with them when they attended weekly visits