http://socialnetworkingnews.org/why-hong-kong-protesters-are-using-firechat-for-peer-to-peer-communications-on-their-mobiles/
Protesters in Hong Kong are using WhatsApp, Twitter and any number of messaging and social media services to communicate and coordinate their activities as tensions with local Chinese authorities intensify. But one app in particular is getting more attention than usual: FireChat.
The messaging app created by Open Garden can send and receive messages without an internet connection. It uses peer-to-peer Bluetooth and Wi-Fi Direct connections to link to other nearby FireChat-enabled devices. If you get enough of those devices in the same area, the result is a massive mesh network in which every handset can message every other handset in daisy-chain fashion – without ever sending a packet over an internet router.
Source: www.yahoo.com
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