Developer Sends Bitcoin via Apple's Find My Network Without Internet

A developer transmitted Bitcoin across Apple's Find My network using a compact device that routes Cashu ecash tokens through nearby iPhones. The sender operates without any internet connection.

This proof-of-concept repurposes Apple's AirTag tracking system into an unusual payment channel. However, its creator advises it should be used solely for tiny amounts.

Mechanism for Sending Bitcoin Over Apple's Find My Network

BREAKING: bitcoin sent via apple's "find my" mesh network

possibly the most absurd medium to send bitcoin yet

a small device convinces nearby iphones to transmit tiny amounts of data with cashu ecash to the recipient.

without any internet connection.

magic i̶n̶t̶e̶r̶n̶e̶t̶… pic.twitter.com/jVYXGN7YE1

— calle (@callebtc) September 30, 2026

The Cashu developer who posted the experiment on X described it as perhaps the most bizarre method for sending Bitcoin to date. Cashu is an ecash protocol designed to preserve privacy in Bitcoin payments through bearer tokens issued by mints.

The open-source code, published on GitHub, runs on inexpensive ESP32 boards. The device encapsulates a token in Bluetooth signals resembling lost-item beacons.

Nearby iPhones detect those signals and relay them via Apple's Find My network, similar to how they report a missing AirTag. Meanwhile, the recipient retrieves those reports using an Apple account and reconstructs the token piece by piece.

A Python script verifies the reconstructed token for errors and then outputs it. Each signal carries only two bits of data, so a standard token requires well over 1,000 broadcasts.

Public Nature of Tokens Enables Anyone to Spend Them

The developer warns that every broadcast token is visible publicly. Because Cashu tokens work like digital cash, anyone who recovers one can spend it.

The weak point is the transport itself. According to the protocol notes, the payload carries no encryption, and the IDs needed for lookup are open.

Consequently, the documentation advises sending only giveaway amounts. It adds that delivery is slow, unofficial, and carries no guarantee.

The recipient also accesses Apple's Find My network through an unofficial interface. As a result, the tool could stop working if Apple changes that interface.

This Find My experiment remains a novelty rather than a payment product. Still, it joins other efforts to make Bitcoin payments feel like texting, only this time without internet. Other developers are chasing private Bitcoin transfers on the base layer instead.