A full-body scanner is a device that detects
objects on a person's body for security screening purposes, without physically
removing clothes or making physical contact. Depending on the technology used,
the operator may see an alternate-wavelength image of the person's naked body,
or merely a cartoon-like representation of the person with an indicator showing
where any suspicious items were detected. For privacy and security reasons, the
display is generally not visible to other passengers, and in some cases is
located in a separate room where the operator cannot see the face of the person
being screened. Unlike metal detectors, full-body
scanners can detect non-metal objects, which became an increasing concern after
various airliner bombing attempts in the 20002.
Starting in 2007, full-body scanners started supplementing
metal detectors at airports and train stations in many countries.
Excerpt from Wikipedia, the Free Encyclopedia
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