No Internet No Problem: Jack Dorsey's Bitchat Allows Bitcoin Transfers Over Bluetooth
Jack Dorsey has launched Bitchat, a beta app enabling offline Bitcoin transfers and encrypted messaging via Bluetooth. The app creates a peer-to-peer mesh network, allowing messages and Bitcoin transactions to relay across devices without internet or mobile networks. It uses end-to-end encryption and ephemeral IDs for privacy.
with the limitations of Bluetooth, I don't see this as a major innovation
I just wrote an article about this.