Anonymous messaging via Bluetooth mesh networks by Dorsey
Chat with people nearby using only Bluetooth - no WiFi, cellular, or internet needed. Messages relay through connected devices up to 300m away. End-to-end encrypted with no accounts or tracking. Built for gatherings, disasters, protests, etc.
Bitchat's Bluetooth mesh network enables multi-hop peer-to-peer messaging across nearby devices without internet, allowing users to relay messages through up to 7 hops of connected devices in emergencies or areas without connectivity.
Bitchat implements IRC-style commands (/slap, /msg, /who) and provides native iOS and macOS apps with automatic peer discovery, allowing users to start chatting immediately without configuration or account creation.
Bitchat's location channels use geohash precision (block, neighborhood, city, province, region) to create geographic chat rooms accessible via Nostr protocol, enabling users to join community discussions tied to specific physical areas.
Bitchat offers triple-tap emergency wipe to instantly clear all data, uses no persistent identifiers, maintains no central servers, and employs binary protocol compression optimized for Bluetooth LE, ensuring minimal data footprint and maximum privacy.
Bitchat provides account-free private messaging using Noise Protocol encryption for Bluetooth and NIP-17 gift-wrapping for Nostr, with ephemeral keys per geohash area, eliminating the need for persistent identifiers or phone numbers.