Actually, yes. If you put one of these into a hand held device and had some sort of eye wear with a display on it you could use it to look through stuff. Its kind of like ultrasound though rather than light as you're looking at reflections of the RF energy of different boundary layers. No doubt you could attempt to reconstruct what that would look like but it would be imperfect, say you painted the blade of a knife white, the scanner wouldn't know that.