Twitter co-founder Jack Dorsey has launched a new messaging app that works without wifi or phone service. Bitchat instead operates using a phone’s Bluetooth signal, which allows users to communicate during situations such as music festivals or protests where mobile signal is patchy or restricted.

Block CEO Jack Dorsey has launched Bitchat, a new peer-to-peer messaging app that works entirely over Bluetooth mesh networks.

Jack Dorsey, a co-founder of Twitter, created the decentralized messaging app BitChat, which is already in beta testing. Bitchat was created to run over Jack Dorsey launches Bitchat, a decentralized Bluetooth messaging app offering encrypted,