New study shows how to use WiFi signals like sonar to spy on people

Past HN discussion on Arxiv paper(<a href="https:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;2301.00250" rel="nofollow noreferrer">https:&#x2F;&#x2F;arxiv.org&#x2F;abs&#x2F;2301.00250</a>) - <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=34423395">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=34423395</a>

For a moment I thought they found a way for WiFi to use sound instead of radio.