Hacker News Reader

I remember researching this in 2008 and I thought satellite based lasers were already in common usage (sending signal to specific known surface location and also receiving from that location using the surface of the ocean as the medium that the sub and satellite read.

This was a while ago so no links maybe I’m misremembering.

View on HN

Also learned about submarine to satellite direct communications with lasers in a 33c3 video at: https://youtu.be/P4Qk88IpND0?t=32m8s

Source: https://twitter.com/kdeldycke/status/830035138805428224

they do this with directional encrypted radio. what would be the advantage of doing it with a laser other than 'friggin' laser'?

What the other comment said. I guess it’s also because of friggin lasers and I may even be misremembering that part. But a laser would have a smaller beam diameter and less likely of interception.

Hide the fact of communication instead of the content of communication

Reply on news.ycombinator.com