Jack Dorsey, the co-founder of Twitter, has unveiled Bitchat, an innovative peer-to-peer messaging application that operates solely over Bluetooth. This groundbreaking app eliminates the need for internet connectivity, phone numbers, or centralized servers, allowing users to engage in encrypted, ephemeral conversations even in the face of internet blackouts or censorship efforts. Currently in beta testing via Apple’s TestFlight, Bitchat is poised to redefine how we communicate in restricted environments.
How it works
As detailed on Dorsey’s GitHub page, Bitchat establishes local Bluetooth ‘mesh networks’ that enable phones to relay messages from one device to another. This unique approach extends communication capabilities beyond the limitations of cellular or Wi-Fi networks. Messages are stored exclusively on users’ devices, disappearing by default, while end-to-end encryption safeguards against unauthorized access. Additionally, users can create optional group chats, known as ‘rooms,’ which can be secured with passwords. Future updates are expected to introduce Wi-Fi Direct support, enhancing messaging speed and range.
In a recent Twitter post, Dorsey characterized Bitchat as a personal experiment in decentralized technology, building on his commitment to privacy-centric platforms such as Damus and Bluesky. Unlike mainstream messaging services like WhatsApp or Messenger, Bitchat does not collect user data, requires no accounts, and operates independently of traditional tech infrastructure.
Use cases and limitations
The app is particularly suited for situations where internet access is compromised, such as during protests or natural disasters, echoing the functionality of existing tools in these contexts. However, its dependence on Bluetooth means that messaging is limited to nearby devices unless ‘bridge’ devices are employed to connect different clusters.
A whitepaper available on GitHub elaborates on Bitchat’s technical framework, highlighting its design aimed at resisting censorship. While the app is still in its early testing phase, it embodies Dorsey’s overarching vision for decentralized communication. This vision is further evidenced by his previous creation, the decentralized social media platform Bluesky, which has already attracted over 20 million users as of November 2024. Nevertheless, the practical effectiveness of Bitchat at scale remains to be seen, and Dorsey’s team has yet to announce plans for an Android version or a comprehensive public launch.
