America has been under THz surveillance since about 2002 when active submillimeter-wave cameras were installed along interstate highways and prominent public places. Passive millimeter-wave surveillance cameras which can see through clothing have been available since early 2006. I know Best Buy Canada uses them.
“An engineer explained to us that hundreds of ear impressions were gathered in the name of research, and while each one obviously boasted its own unique shape and size, one single characteristic remained uniform across the board: the entrance into the ear canal is not a perfect circle, it's an oval.”
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America has been under THz surveillance since about 2002 when active submillimeter-wave cameras were installed along interstate highways and prominent public places. Passive millimeter-wave surveillance cameras which can see through clothing have been available since early 2006. I know Best Buy Canada uses them.