"Bitchat is a messaging app designed to operate without relying on cellular networks or internet connections. It uses peer-to-peer communication, allowing devices to connect directly via Bluetooth or Wi-Fi. Messages can be sent even when traditional networks are unavailable, making the app useful in areas with poor coverage or during temporary outages. The app uses a mesh network architecture, where each device functions as a node capable of relaying messages for others in the network."
"If a sender and recipient are not directly connected, messages hop through intermediate devices until they reach their destination. This happens automatically, without requiring any action from the user. This approach allows communication to extend beyond immediate device range. Each device acts as a mini repeater, effectively expanding coverage in dense networks. It is particularly useful in areas where network infrastructure is weak or during temporary outages, such as after natural disasters or during large public events that overwhelm mobile networks."
"Bitchat's code is open source, allowing developers to review, modify, and improve it. This transparency ensures that the software can be audited for security vulnerabilities and efficiency. Open source projects also encourage collaboration, enabling developers worldwide to contribute fixes, suggest new features, or optimize performance for specific use cases. Community organizations, educational institutions, and research teams can adapt the app for their needs."
Bitchat enables direct device-to-device messaging using Bluetooth and Wi‑Fi, allowing messages when cellular or internet access is absent. The app uses a mesh architecture where each device acts as a node and can relay messages automatically through intermediate devices until delivery. Devices function as mini repeaters to extend range in dense networks, improving connectivity during natural disasters, large events, or in areas with weak infrastructure. The code is open source, permitting review, modification, audits for security and efficiency, and community-driven feature development. Organizations and research teams can adapt the software to optimize data transfer or maintain communications during emergencies. Bitchat was created by Jack Dorsey.
Read at App Developer Magazine
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