writes "Online hacktivist collective Anonymous has announced that it is working on a new tool called Airchat which could allow people to communicate without the need for a phone or an internet connection — using radio waves instead. Anonymous, the amorphous group best known for attacking high profile targets like Sony and the CIA in recent years, said on the project's Github page: 'Airchat is a free communication tool [that] doesn't need internet infrastructure [or] a cell phone network. Instead it relies on any available radio link or device capable of transmitting audio.' Despite the Airchat system being highly involved and too complex for most people in its current form, Anonymous says it has so far used it to play interactive chess games with people at 180 miles away; share pictures and even established encrypted low bandwidth digital voice chats. In order to get Airchat to work, you will need to have a handheld radio transceiver, a laptop running either Windows, Mac OS X or Linux, and be able to install and run several pieces of complex software."
And to cleanse yourself of the ads with autoplaying sound, you can visit the GitHub page itself