I don't see any reason to think it's fake. Of course Nis is right, the images were taken at different times, and the subject moved slightly. Millimeter waves behave more like radio waves than visible light, and the equipment for capturing the two images will be completely different.
I also don't see anything odd about it not penetrating the shoes. Shoe leather is much more dense than the shirt and pants he's wearing (and note that even the newspaper is thick enough to have some effect, if there's a clean background to see it against).
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I don't see any reason to think it's fake. Of course Nis is right, the images were taken at different times, and the subject moved slightly. Millimeter waves behave more like radio waves than visible light, and the equipment for capturing the two images will be completely different.
I also don't see anything odd about it not penetrating the shoes. Shoe leather is much more dense than the shirt and pants he's wearing (and note that even the newspaper is thick enough to have some effect, if there's a clean background to see it against).