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Australian scientists have invented software that enables mobile phones to work in remote areas where there is no conventional coverage and in locations where the infrastructure has been destroyed through disaster, or is not economically viable.The “Serval Project” technology enables ordinary mobile phones to make and receive calls without the need for phone towers or satellites.

Converting a cell phone into a cell tower The project includes two systems that can operate separately or be combined. One is specifically for disaster areas, and consists of a temporary, self-organizing and self-powered mobile phone network that operates via small phone towers dropped into the area by aircraft.The second system consists of a permanent mesh-based phone network between Wi-Fi enabled mobile phones, with no tower infrastructure required. It incorporates a compact version of a mobile phone tower into the phone itself, using the Wi-Fi interface in Wi-Fi-enabled phones.The current range between phones is only a few hundred meters, which limits the usefulness of the system in remote areas, but adding small transmitters and more devices could expand the range considerably.