Find My
A crowdsourced network of over a billion iPhone, iPad, and Mac devices. When a tracker goes out of Bluetooth range, nearby Apple devices anonymously detect its encrypted BLE public key and relay the location to iCloud — end-to-end encrypted, so not even Apple knows who found what.
- Network Size1B+ active devices
- CryptoNIST P-224 ECC
- Key RotationEvery ~15 minutes
- ProtocolBLE advertising + relay
- Precision FindingUWB (AirTag 2nd gen)
- Anti-StalkingSeparated alerts + sound
Find Hub
Google's crowdsourced finding network leverages over one billion Android phones worldwide. Based on the Fast Pair protocol, trackers broadcast ephemeral IDs detected by nearby Android devices — location data is end-to-end encrypted with the same key technology used in Google Password Manager.
- Network Size1B+ Android devices
- CryptoSECP160R1 / SECP256R1
- ID RotationEID (Ephemeral ID)
- ProtocolBLE + Fast Pair GATT
- Precision FindingUWB + BT Channel Sounding
- Anti-StalkingDULT spec compliant
How crowdsourced finding works
Your tag broadcasts a low-energy Bluetooth signal. Any nearby phone running Apple Find My or Google Find Hub anonymously picks it up, encrypts the location, and relays it to the cloud. Only your phone can decrypt and see where it is.
Tag Chip Certified & Selected
by HH-Tech
Silicon Matters.
The tracker is only as good as the BLE chip inside. We cooperate with chip suppliers around pre-qualified silicon — RF-tuned in-house, validated against both networks, and cost-optimized for your volume tier.
- Our Chip — certified and selected by HH-Tech, ultra-low-power, best cost-performance
- 2026 next-gen low-power silicon: 50% lower power draw vs. previous generation, driving 2+ years on a single CR2032 coin cell
- Custom antenna tuning: optimized for 90°+ detection angle and -80dBm sensitivity
for HHTAG PRO
UWB and BLE. One chip, not two.
Traditional trackers use two separate chips — a BLE SoC and a discrete UWB chip — each with its own power rails, memory, and sleep current. In HHTAG Pro, we integrate UWB and Bluetooth IoT on a single SoC at the silicon level.
- Single-die integration removes the inter-chip power overhead
- Lower overall power draw — a single CR2032 drives the UWB-enabled tag for a full year
- Smaller PCB, smaller enclosure, same CR2032 form factor as our BLE-only tags
UWB: From lab to your pocket.
Ultra-wideband has moved from military radar to centimetre-accurate item finding in under a decade.
IEEE 802.15.4a
First formal UWB PHY/MAC standard.
Apple U1 chip
iPhone 11 brings UWB to consumer phones.
802.15.4z
Enhanced security and FiRa specs.
AirTag Precision
Centimetre-accurate Precision Finding.
HHTAG Pro
First BLE+UWB combo for Android Find Hub.
Why impulse UWB is built for ranging.
UWB doesn't send a continuous radio wave — it fires billions of sub-nanosecond pulses. That's what makes it a ruler, not just a radio.
Pulse travels at light speed. Measure bounce-back time = distance.
Spreads across GHz spectrum — looks like noise to other radios.
Estimates angle of arrival, distinguishes line-of-sight from reflections.
Sub-1ns pulses separate objects 30cm apart — Bluetooth can't.