This technology has been around for awhile; I remember reading about it years before 9/11 in either Popular Science or Popular Mechanics. Many privacy advocates fear that this form of technology would reveal more than just what people are carrying; the possibility for embaressment occurs when people walk through with penile enhancements or other forms of surgery. How would a TSA grunt react to a woman with bolts in her neck?
I think this would be a good supplementary form of security. Individuals would have the option to use this security measure (which seems faster) with the understanding that they really wouldn't have anything to hide, and those who were uncomfortable with it would be allowed to use traditional means. Requiring airports to have noninvasive forms of security would be important, as I really don't like the idea of forcing people to be naked to get on a plane.
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If ignorance is bliss, you must be having an orgasm.
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