Armed with two rooted Android phones and three Wi-Fi hotspots running cell site simulator detection software developed by EFF, npub14lpy6kf4n66qtjttw76gcl3swt02txtw2sx7vamft3s69rj9kt8s3wujhu (npub14lp…ujhu) conducted a first-of-its-kind wireless survey of the signals around the Democratic National Convention.
https://www.wired.com/story/dnc-hidden-signal-hunt/