Developer Sends Bitcoin Cashu Tokens Offline via Apple's Find My Network

Techub News reports that a developer has sent Bitcoin Cashu tokens through Apple's Find My network. The experiment uses a small device to package Cashu token data into Bluetooth signals by mimicking the beacon of a lost AirTag. Nearby iPhones receive these signals and relay them through Apple's Find My network, without the need for the sending device to connect to the internet. The recipient retrieves these relayed reports through their Apple account and gradually reconstructs the token. Since each signal carries only two bits of data, a typical token requires more than 1,000 broadcasts to complete the transmission. The developer warns that broadcasted tokens are public and the transmission itself is unencrypted, so it is recommended to send only very small amounts. This experiment is currently only a proof of concept and not a mature payment product. The code has been open-sourced on GitHub and runs on low-cost ESP32 development boards. (BeInCrypto)