It is easy to bracket FireChat with other messaging or micro-blogging platforms, but this new kid on the block is different. While the entire bouquet of messaging apps and services like Twitter are dependent on Internet for their existence, FireChat can create conversations offline, often with great impact.
The app does this by tapping into the radio capabilities of the handset and creating a mesh network. The messages have a range of 70 metres, but can go much beyond this range as a link is created from phone to phone using Bluetooth. With its latest OM (off-the-grid-messaging) launch, however, the company claims to be able to deliver a private encrypted message without access to the network. FireChat creates a peer-to-peer mesh network that takes your message from phone to phone until it reaches the intended user.
http://indianexpress.com/article/technology/social/firechat-the-no-network-messaging-service/
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