Being in this state of affairs I've wondered what people will do with all these wireless transceivers (wireless cards, access points, bluetooth, etc) if the Internet takes a dump on itself, or the plug is pulled by Ma and Pa Federal.
I've been contemplating novel peace-time systems of communication using wifi transceivers, and perhaps eventually linking neighborhood/apartment mesh-nodes with each other through longer distance CB or ham radio.
An access point serving a socket.IO chat server for anyone who connects to the AP.
Example of nodechat: http://nodechat.no.de/ registration is simple, user/pass/email (which isn't checked I don't think).
I posted an idea on twitter:
ad-hoc chat/server with some low level wifi broadcast packet tweaking?
I want to make something extremely transparent and allow ANYONE to be able to join in on the communication, an issue I can see is malicious code being pushed by "bad nodes"...
Suggestions from @rrrrrrrix:
or just use link-local xmpp (Bonjour) :-)
that paired with BATMAN (mesh network protocol) makes for awesome infra-less lan chat
At Defcon 19 I was able to go see a presentation talking about using the built-in transceivers on android phones to create an ad-hoc network of sorts called auto-BAHN [main site]. It seems to be in a very early stage, but I like the goal of having a standardized mesh protocol running on all smart phones that can be activated in case the cellular signal is lost (or activated on volition).
However, I do not own a smart phone with wifi built in, and I figure a lot of valuable human beings are without these smart phones, but may have a wireless card installed on their computer. Integrating an auto-BAHN mesh network into router firmware would also be a great idea to make longer range nodes that aren't reliant on battery life.