seemoo-lab/openhaystack
Some data may be outdated — see provenance labels.
Build your own 'AirTags' 🏷 today! Framework for tracking personal Bluetooth devices via Apple's massive Find My network. observed · 2026-09-28
Health v2 · maintenance only
63/100
- Activity 90
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2066
- days_rel: n/a
- days_push: 64
- n_releases_24m: 0
Adoption not part of the score
13695 stars · 689 forks observed · 2026-09-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
OpenHaystack is a framework and macOS application for creating custom Bluetooth tracking tags that leverage Apple's Find My (offline finding) network to report their location. It was built from a security analysis of Apple's Find My protocol and includes firmware for micro:bit and other BLE devices.
Use cases
- build my own airtag-like tracker
- track my keys or backpack with bluetooth
- integrate find my tracking into a custom device
- reverse engineer apple's find my network
- locate lost items without cellular coverage
- flash openhaystack firmware onto a micro:bit
When to choose
- you want an open-source, self-built alternative to AirTags using Apple's Find My network
- you're researching or learning how offline finding and BLE advertising work
- you want to embed tracking into your own Bluetooth-capable hardware
When to avoid
- you need a polished, production-ready tracker with anti-stalking protections
- you don't own a Mac, since the companion app is macOS-only
- you need rotating keys or complete firmware robustness, as the code is experimental and broadcasts a fixed public key
Facets
framework · maturity experimental
security cryptography reverse-engineering security privacy hardware apple-ecosystem reverse-engineering embedded find-my airtag bluetooth-tracking location-tracker offline-finding microbit ble-beacon bluetooth macos swift
3 sources
- readme: https://github.com/seemoo-lab/openhaystack · fetched 2026-09-28 · 79f2d28e0fe8
- homepage: https://owlink.org · fetched 2026-08-29 · 7ce454d82c77
- site_page: https://owlink.org/about · fetched 2026-08-29 · cc586a2e5aab
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| seemoo-lab/openhaystack | main | 63 |
For agents
markdown · JSON · MCP: product_card(name="seemoo-lab/openhaystack")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem