I read the referenced papers : https://atap.google.com/soli/technology/ https://atap.google.com/soli/technology/ About 60Ghz technology : https://www.embedded.

I read the referenced papers : https://atap.google.com/soli/technology/ https://atap.google.com/soli/technology/ About 60Ghz technology : https://www.embedded.com/why-60ghz-mmwave-is-moving-into-the-mainstream/ https://www.embedded.com/why-60ghz-mmwave-is-moving-into-the... I've played with some 6Ghz 2$ microwave radar sensor and Software Defined Radios though I have not yet used 60Ghz. Electromagnetic Waves are kind of magic when used in not conventional ways. I remember seeing the 2015 disney EM-sense video https://www.youtube.com/watch?v=fpKDNle6ia4 https://www.youtube.com/watch?v=fpKDNle6ia4 which is a non-radar way to listen to the environment.