Tags and Pairing

A pet wears one Bluetooth tag on its collar. Two families are supported today:

Supported tags

• 911PetFind fob (Holyiot nRF52810) - our configured beacon. Long battery life, works with a shared identity scheme designed for a future iPhone-detection upgrade.
• iTag / iSearching finder fobs - the cheap round fobs sold everywhere. Zero configuration: power on and pair. Identified by a fingerprint of the tag's fixed hardware address, hashed on the phone. Android phones detect these; the Holyiot path is what will cover iOS later.

AirTags and Galaxy SmartTags cannot join: they rotate their identity every few minutes by design (anti-stalking), so no third-party network can follow them.

Batteries

Tags take a standard coin cell and are supplied without one, so you fit a fresh, known-good battery yourself. Which cell depends on the tag - it is printed inside the battery compartment.

• CR2032 is the usual size and the one to buy if you have the choice.
• CR2025 fits the same holder and works, but it is thinner and holds roughly three quarters of the energy, so expect noticeably less life. If a tag using one drops off and returns when pressed, that is the thinner cell losing contact, not a flat battery.

Battery life depends far more on how often the tag broadcasts than on the brand of cell. Our own testing on this is ongoing and we publish what we measure rather than what a datasheet claims.

Pairing (60 seconds)

1. Power the tag on (hold its button 3-5 s until it beeps).
2. In the app: My Pets, choose the pet, Attach tag.
3. Hold the tag against the phone - the strongest tag lists first.
4. Tap Pair. Done: the pet's detail page now shows the tag and its last mesh sighting.

Once paired, Find Nearby helps you close the last few metres. Tags are sold from the website - see Buying a Tag. One tag per pet; unpairing frees the tag for another pet. From that moment The Mesh Network tracks it and the Home Zone can guard it.