Reverse Engineering ZYHQ Smart Rings - Sniffing BLE Health Telemetry in Real Time
August 23, 2026
In this post, we’ll build a Python script to scan for nearby ZYHQ/Yucheng smart rings (Temu Link) and parse their BLE advertisements to extract user biometric telemetry — heart rate, SpO₂, blood pressure, steps, temperature, battery, and more.