A millimeter wave scanner at Cologne Bonn Airport, Germany, EuropeActive millimeter wave unit
A millimeter wave scanner is a whole-body imaging device used for detecting objects concealed underneath a person’s clothing using a form of electromagnetic radiation. Typical uses for this technology include detection of items for commercial loss prevention, smuggling, and screening for weapons at government buildings and airport security checkpoints.
It is one of the common technologies of full body scanner used for body imaging; a competing technology is backscatter X-ray. Millimeter wave scanners themselves come in two varieties: active and passive. Active scanners direct millimeter wave energy at the subject and then interpret the reflected energy. Passive systems create images using only ambient radiation and radiation emitted from the human body or objects.[1][2][3]
^Mitchel Laskey (2010-03-17). "An Assessment of Checkpoint Security: Are Our Airports Keeping Passengers Safe?" (PDF). House Homeland Security Subcommittee on Transportation Security & Infrastructure Protection. Archived from the original (PDF) on 2012-12-13.
^Matthew Harwood (2010-03-05). "Companies Seek Full-Body Scans That Ease Health, Privacy Concerns". Security Management. Archived from the original on 2014-10-06.
^Appleby, R (15 February 2004). "Passive millimetre–wave imaging and how it differs from terahertz imaging". Philosophical Transactions of the Royal Society. A: Mathematical, Physical and Engineering Sciences. 362 (1815): 379–393. Bibcode:2004RSPTA.362..379A. doi:10.1098/rsta.2003.1323. PMID 15306527. S2CID 7725952.(subscription required)
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