Yep, pretty much exactly this. I understand it enough to use it as a tool and do...

Prcmaker on July 4, 2021 | parent | context | favorite | on: Underground fiber optics spy on humans moving abov...

Yep, pretty much exactly this. I understand it enough to use it as a tool and do some rudimentary troubleshooting, but to explain how it works would require some waving of the hands to fill in my knowledge gaps.