How Google's crowdsourced network finds a tracker — and how HH-Tech tags plug into it.
Google Find Hub (formerly Find My Device Network) is a crowdsourced finding layer launched in 2024 and built on over one billion Android phones worldwide — enabled by default on modern Android devices. Based on the Fast Pair protocol, trackers broadcast ephemeral IDs detected by nearby Android devices. Every location report is end-to-end encrypted — even Google can't read who found what, or where.
Every location report is encrypted with the same key technology behind Google Password Manager. Google stores location data but cannot read it — privacy by design.
Nearby Android phones relay location without exposing their identity — a rotating temporary token refreshes automatically, so no one can link a passerby to a location.
Find Hub runs on every modern Android phone with no setup required — a billion potential finders already in your pocket.
Each tracker generates a unique 32-byte Ephemeral Identity Key (EIK) on its owner's phone at pairing — a master key Google never sees. From it, the tag derives short-lived ephemeral IDs that rotate constantly, so a tag's BLE signature changes every few minutes and can't be followed over time. When a finder relays a location, it's sealed with AES-256 end-to-end encryption keyed by an anti-spoofing public/private pair on the secp256r1 elliptic curve — the same curve class used across Google's security stack.
Your tag broadcasts a rotating ephemeral ID over Bluetooth Low Energy — readable by any nearby Android phone, but meaningless on its own.
A passing Android device anonymously picks up the signal, encrypts its location, and relays it to Google's servers. The device's identity stays private throughout.
Only your phone, holding the private key, decrypts the encrypted location and shows exactly where the tag is.
With UWB and Bluetooth Channel Sounding, Find Hub supports centimetre-accurate Precision Finding on Android — where HHTAG Pro leads the way.
Find Hub lets you share an item's live location with airline staff, movers, or anyone you trust. Sharing stops the moment your phone sees the item return, and shared links expire automatically after seven days.
Every Find Hub-certified accessory must implement the cross-platform DULT (Detect Unwanted Location Trackers) specification — built together by Apple and Google. If a compatible tracker follows someone without their consent, both iOS and Android phones raise an alert. Like Apple, HH-Tech does not permit its tags to be used to track people or pets. Finding things — not people — is the whole point.
HH-Tech received Google Find Hub certification in 2024 — the same year Google opened the network. In 2025 our HHTAG01-Dual became the first UK-owned tracker certified for both Find My and Find Hub. Our Smart Tag for Android and HHTAG Pro are built for this network.