I Built a CIA Spy Device (Laser Mic)
Why the open web links it
Demonstrates building a laser microphone to detect sound from a distance using physics and DIY engineering.
Linked by 10 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including hackaday.com, disroot.org, vger.social, ubergeek77.chat, libretechni.ca.