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A graphical representation of a mesh network connected to the regular internet through several nodes.

Imagine accessing a new internet; an internet that is controlled and maintained by your neighbors instead of ISPs and the government. Does that sound appealing? That probably depends in large part on who you are and where you are, but the fact is, this isnt just a fantasy.

Old tech hands probably know all about wireless mesh networking, but Ill admit I wasnt too familiar with the concept before I read this recent article on Mother Jones. The basic idea is that any group of people in any geographic location can create their own network by linking together wireless routers and eschewing the physical cables that we use to connect to the real internet entirely.

Now obviously, how much you can do on that network depends very much on what the other users are willing to put into it. Since its essentially an intranet, you wont be able to access Google.com from it or anything like that (unless someone else on the network is willing to share their connection). But that doesnt mean its useless, and in fact big mesh networks have a lot to offer. The Mother Jones article describes one such network in Athens, Greece, which connects more than 1,000 members:

There are blogs, discussion forums, a Craigslist knockoff; theyve held movie nights where one member streams a flick and hundreds tune in to watch. Theres so much local culture that they even programmed their own mini-Google to help meshers find stuff.

Now imagine how much would be on offer if such a network caught on in Beijing or Tokyo.

Imagine every wifi router in this picture connected.

Of course, there are some obvious downsides to such an approach. In addition to the lack of content, your neighbors could ditch their routers, leaving you in the dark. Many older routers cant support mesh networks in the first place, and purchasing the right hardware can come with an up-front cost of $100 or more that might be too expensive for some (although of course, once youve got the hardware, connecting is free forever). Such networks do rely on geographical proximity; theyre probably not going to work well outside cities until the routers people are using have a much greater range (although with a little extra equipment it is possible to connect to other meshes that are miles away). And of course, the lack of any central control over the network could make it especially vulnerable to crime.

But the upsides are also compelling. Once youve got the hardware and some people already do without even knowing it mesh networks are cheap. Theyre also very fast. Theyre owned by you and the group collectively, rather than a corporation. The only physical aspect of them is the individual routers, so as long as most or all of them dont go down at once, the network stays up. And although its obviously not too difficult to listen in on a mesh network if one is so inclined, they arent beholden to any ISPs or governments and the only way to shut them down would be to physically disable every router in the network. Because of the impracticality of doing that in a city of millions like Beijing, a mesh network in China could (for example) serve as a censorship-free zone where political discussions can occur openly without risk of a government shutdown or of the users ISP turning their personal information over to police. In combination with the right anonymization tools, mesh networks could be a good way of circumventing the internet censorship in authoritarian countries like China and allowing people to have a real conversation.

And of course, since the internet is accessible by satellite, it would even be possible to set up an uncensored satellite internet connection anywhere with domestic internet censorship and then share that connection via a mesh network. Such a solution would be slow and probably extremely expensive today, but in ten or twenty years, it could be faster and more economical.

Originally posted here:
Mesh networks can help Asia avoid censorship and recover from disasters