Can You See Through Walls With Infrared. I made a diy infrared camera from a smartphone 4 years ago. If you point a thermal camera at a wall, it will detect heat from the wall , not what's behind it.
Walls are generally thick enough—and insulated enough—to block any infrared radiation from the other side.
After all, walls don't block wireless signals. Mit's computer science and artificial intelligence laboratory has created a system that can see your body through walls, recreating your poses when you for years — decades, even — there was little question about whether you could become a venture capitalist if you weren't comfortable financially. In the past, technologies that see through walls were only available for some governmental services. So thin you can often see people's pants through their leggings even without infrared.