3 ms·

> everyone in that 3km circles are being received by your device too. This could be pretty intense. Using the below tool I had a play and found that you could

• JNRowe 3y ago
  I was thinking that number seemed crazy, as it is closer to ~10k at 3km for me(near Cambridge, UK). However, using that site and checking a few friends houses I see Cairo isn't that unusual; ~400k in Camden, 750k in Paris' 11th. And, making a couple of guesses at denser places led me to 1.7 million in Mumbai. If anything it makes more amazed that regular wifi works as well it does between the house and garden, and I'll try to remember that next time I'm bemoaning its magic.
  • lostlogin 3y ago
    Assuming it’s mostly accurate (it has errors in my area), you can find bits of Cairo that exceed 2.1 million in a 3km circle, and Mumbai I can get over 1.8 million. I’m in New Zealand and at that density you could fit our entire population in just over 2 of these 3Km circles. I feel irritated when people stand too close to me, but at the Cairo density there must be tens of people within a stone throw.
• neltnerb 3y ago
  The paper talks about how they can get it to work in a narrow 1MHz band (though at full 1MBbit/sec speeds I am skeptical of course), but even then I'm struggling to imagine fitting the number of people on that beach into channels that isn't a disaster. Strange to not address it... Maybe if they formed a mesh network that prioritized signals of a certain power level and had dynamic power levels to avoid losing touch with the mesh while avoiding blocking close + strong signals.