Slightly related,a little dated, but relevant reminder: Rebehold, the Range-R: https://en.m.wikipedia.org/wiki/Range-R https://en.m.wikipedia.org/wiki/Range-R

Slightly related,a little dated, but relevant reminder: Rebehold, the Range-R: https://en.m.wikipedia.org/wiki/Range-R https://en.m.wikipedia.org/wiki/Range-R https://www.usatoday.com/story/news/2015/01/19/police-radar-see-through-walls/22007615/ https://www.usatoday.com/story/news/2015/01/19/police-radar-...