[perlgeek]

Since the user manual for this sensor mentions security monitoring as a possible application, I'm wondering: is there any simple way to prevent detection from such a mm wave radar? (Assuming for simplicity that we know where it's mounted, and in which direction it's pointing).

[lindboe]

Depends on the definition of "simple", imo. The first thing that comes to mind is research into materials with good (tens of dB), wideband absorption in the mmWave bands. It's an area of active research [1] [2] (just a couple articles from a quick google, so caveat emptor).

[1] https://www.cambridge.org/core/journals/international-journa...

[2] https://pubs.rsc.org/en/content/articlelanding/2022/tc/d1tc0...