TimeFlipper
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Yes the military has that capability not sure what its called exactly but a Google search should net some results. And I've heard of an android app that can see through drywall.
Thermal imaging cameras cannot "see" a heat source (Humanoid) that's behind a thick concrete wall, which forms the title of this thread..
A pipe containing a heat source such as hot water, and is built "inside" a concrete wall, could be seen by thermal imaging, provided that the heat is passed through the exterior of the concrete wall, for the thermal imaging camera to pick it up..