Full Body Scanner
A full-body scanner is a device that creates an image of a person's naked body through their clothing to look for hidden objects without physically removing their clothes or making physical contact. They are increasingly being deployed at airports and train stations in many countries, and are highly controversial because of the privacy implications of the government taking naked pictures of citizens and also the potential health risks of receiving unnecessary radiation, which could contribute to cancer.
One technology used under the name "full-body scanner" is the millimeter wave scanner, the active form of which reflects extremely high frequency radio waves off the body to make an image on which one can see some types of objects hidden under the clothes. Passive millimeter wave screening devices rely on only the raw energy that is naturally emitted from the human body or objects concealed on the body; passive devices do not transmit millimeter waves. Another technology in use is the backscatter X-ray.
Two advantages of full-body scanners over a physical strip search are that it is quicker (takes only 15 seconds) and that people do not have to physically remove their clothes. A disadvantage is that the scanners are being used to perform routine, virtual strip searches without probable cause which opponents claim are illegal unreasonable searches that violate basic human rights. Furthermore, the true long-term health effects of the active, radiating technologies are unknown.
Read more about Full Body Scanner: History, Usage, Technical Countermeasures, Removal
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