This is incredible stuff! One of the less-hyped slow revolution is what&#x27;s happening in non-wearable sensing. Some of it is driven by the consumer-ization of advanced radar systems, a technology that was the domain of the military and space&#x2F;satellite comm.<p>Some companions to this work:<p>1. Wifi sensing from academia, particularly in the ubiquitous computing community- Shwetak Patel&#x27;s group in Washington [1], Dina Katabi&#x27;s group in MIT [2], Patwari&#x27;s group in Utah [3], etc.<p>2. MIT OCW on how to build a radar system with advanced [4] capabilities <a href="http:&#x2F;&#x2F;ocw.mit.edu&#x2F;resources&#x2F;res-ll-003-build-a-small-radar-system-capable-of-sensing-range-doppler-and-synthetic-aperture-radar-imaging-january-iap-2011&#x2F;" rel="nofollow">http:&#x2F;&#x2F;ocw.mit.edu&#x2F;resources&#x2F;res-ll-003-build-a-small-radar-...</a><p>[1] <a href="https:&#x2F;&#x2F;ubicomplab.cs.washington.edu&#x2F;" rel="nofollow">https:&#x2F;&#x2F;ubicomplab.cs.washington.edu&#x2F;</a><p>[2] <a href="http:&#x2F;&#x2F;groups.csail.mit.edu&#x2F;netmit&#x2F;wordpress&#x2F;projects&#x2F;projects&#x2F;" rel="nofollow">http:&#x2F;&#x2F;groups.csail.mit.edu&#x2F;netmit&#x2F;wordpress&#x2F;projects&#x2F;projec...</a><p>[3] <a href="http:&#x2F;&#x2F;span.ece.utah.edu&#x2F;neal-patwari" rel="nofollow">http:&#x2F;&#x2F;span.ece.utah.edu&#x2F;neal-patwari</a><p>[4] I use &#x27;advanced&#x27; in the sense that it is way, way, more sophisticated in its use of math and signal processing&#x2F;machine learning&#x2F;linear algebra algorithms than your standard automotive speed monitoring radar.