Comment on It can be harder to surveil private conversations if everyone just used sign language.
PeriodicallyPedantic@lemmy.ca 2 weeks ago
You can see much much further than you can hear.
You can presumably walk out of earshot. You have to go VERY FAR before you’re out of camera shot for even consumer cameras.
It’d be interesting if there was a multi-modal device-to-device communication protocol, so that you needed both line of sight and be within audio range to be able to pick up the conversation.
Although just record them typing at that point so never mind.
squaresinger@lemmy.world 2 weeks ago
Laser microphones can record audio via line-of-sight at a close to unlimited range.
DeathByBigSad@sh.itjust.works 2 weeks ago
Oh yea, I learned about those when I was a teen. Since then, I kinda feel like NSA was always watching me, just imagining some dude in a suit somewhere on a rooftop aiming the laser at the window just to listen in, even tho I did nothing wrong.
Now the dudes in suits are in your pocket lol.