Jack Dorsey launches a WhatsApp messaging rival built on Bluetooth Twitter co-founder Jack Dorsey announced a new peer-to-peer messaging app Bitchat that works entirely over Bluetooth. Chats are encrypted, ephemeral, and stored only on-device — with no accounts, phone numbers, or servers involved. The app is now live in beta on TestFlight, with future updates set to add WiFi Direct for faster, longer-range communication.  | Read More The Yeshiva World