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View Full Version : A Wireless Communications System That Works When Cell Phones, Internet Are Down


Feuer Frei!
08-22-11, 09:49 PM
One of the first things to disappear in the wake of a major disaster is reliable communication. Without access to cell phone service or the Internet, it's difficult for first responders--or anyone who wants to help out--to speak with each other. And while satellite phones work in these situations, they're too expensive for many first responder organizations to purchase en masse. Now researchers from Georgia Tech College of Computing claim to have developed a cheap, easy solution: LifeNet (http://thelifenetwork.org/), a piece of software that allows people to communicate after disasters, even if landlines, cell phone networks, and the Internet are all down.


"It's just a piece of code that you can have on your laptop or phone. Once you have the software, the computers can communicate with each other, and you don't need infrastructure," says Santosh Vempala, the Georgia Tech computer science professor in charge of the project.


SOURCE (http://www.fastcompany.com/1774515/lifenet-a-simple-communications-system-that-works-when-cell-phones-internet-are-down)

the_tyrant
08-22-11, 09:57 PM
have you tried shouting?
no wires needed!

Fish In The Water
08-23-11, 03:17 AM
There's just one catch: Users have to be within range of each other... But as Vempala notes, "you could have a line of people on this network that are spaced 100 yards apart, and the line could go as long as you want."I've got two cans and a piece of string that'll go just as far... :O:

Penguin
08-23-11, 06:02 AM
:hmmm: a laptop may not be the best comm device when being off the grid...

This looks more like an egghead's invention to solve a problem which is better solved by a low-tech approach.
I can't see any advantage over CB radio, a tech we have since decades.

Osmium Steele
08-23-11, 07:54 AM
HF transmitter and a speedkey. The closest thing to a guarantee you'll get.