Briar is a messenger based on secure Tor networks, as well as Wi-Fi and Bluetooth.

The application uses a peer-to-peer system with no central servers for data transfer, so the service cannot be blocked by taking away servers. Thus, participants exchange messages directly with each other through end-to-end encryption. The messenger uses Tor protocols by default. If the government blocks this onion routing, the app will continue to function via nearby Wi-Fi and local Bluetooth networks.

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