Can infrared cameras see through walls?Updated a year ago

One of the biggest advantages of IR is that obstructions like fog, trees, or darkness do not hinder the image. That means that police can use IR cameras to find criminals hiding in the bushes, and it also means that home inspectors can use IR cameras to look at hot and cold water pipes inside a wall and watch how the temperature of those pipes change when you turn on the water, even if you can’t see the pipes with your naked eye. IR cameras see things best when there is a contrast in temperature so if there is some sort of temperature contrast inside or behind a thin wall (think drywall, as opposed to brick) then the camera should be able to see it. If the wall is all one temperature and there is no contrast, or the wall is well insulated or dense (like concrete) then you won’t see any detail through the wall.

Here is a collection of infrared cameras that Teslong.com sells.