Quite an interesting paper from MIT. I understood maybe 30%. 
But they do include photos. The future applications for this tech are exciting. Everything from switching on/off lights in a home to monitoring that a person in poor health is moving and not in distress. The data returned is minimal and doesn’t reveal physical body features like the scanners at airports.
I think there are so many possibilities for this in practical applications. imho Its really just an updated optical control sensor like we already have. They’re used right now at my job to turn off the lights in unoccupied. Burglar alarms and so on. Except this new tech is smarter and even more adaptable to real word applications.
I’m curious about the difference in this tech and thermal imaging. The size and complexity of the equipment. Cost. Which works better in specific applications.
Daily Mail link (yeah, I know, 
but they used the photos and some text from the MIT paper) What they’ve provided is a short summary of this long academic paper.
MIT paper. Interesting to skim through if you’re into science. But its 13 pages and gets pretty technical. I’d love to attend the conference where it will be presented.
http://rfcapture.csail.mit.edu/rfcapture-paper.pdf