6 ms·
It might enable security but I wouldn't say it _ensures_ it. It just means that visible or IR light (What are they using?) won't leak through walls the way Wi-
by ReactiveJelly 3y ago
It might enable security but I wouldn't say it _ensures_ it.
It just means that visible or IR light (What are they using?) won't leak through walls the way Wi-Fi does. Depending on how wide the beam is and exactly how it all works, it _might_ still leak out of windows and under doors. But it's not like someone casually wardriving outside your house will get as much as they would from Wi-Fi, I would think.
- smallnix 3y agoHow can visible light pass from a core of a star or planet to the outside, but some routers light not? I guess it's just super duper faint?
- colechristensen 3y agoVisible light does not pass from the core of a star to the outside. The sun has a radius of about 700,000 km. Only a few hundred km is transparent enough for light to pass through and has a density of about 300 mg per cubic meter. Roughly the density of air at the altitude where airliners cruise. The photons you see originate from a layer that’s just 0.5% of the radius of the sun. That layer is heated with other photons from inside. The core temp is 15 million K while the photosphere is around 5800 K. The spectrum of the core were the rest of the sun transparent would be much different and … unsafe. (Not that this really makes sense, if the rest of the star was transparent it would go nova)
- Modified3019 3y agoUsing light to heat up the walls of a home enough to start emitting significant black body radiation poses some additional engineering challenges.
- wiml 3y agoThe house's thermal mass would also limit the data rate.
- deleted 3y ago[deleted]
- tsimionescu 3y agoI think that yes, compared to the core of a star, a LiFi AP is aptly described as "super duper faint".
- Turing_Machine 3y agoYeah, you'd want blackout curtains (or better, paint) on your windows. Still cheaper and easier than making your office into a Faraday cage.
- bb88 3y agoThat assumes that Li-Fi doesn't leak RF still.
- jfoutz 3y agoWorking graveyard and renting, I learned aluminum foil is perfect. cheap, trivial to install and remove. and perfectly opaque.
- osigurdson 3y agoCan encryption not be used with LiFi?