Apple Watch is the most direct fit for Beacon on iPhone. It writes to Apple Health natively, so there is no vendor app to configure and no account to link.
What Beacon gets from it
Whatever the Watch records into Health, which typically includes workouts with their heart-rate samples and GPS route, resting heart rate, heart-rate variability, sleep, and daily movement. Beacon reads the workout route where one exists, which is what lets it treat an outdoor run's distance as measured rather than estimated.
How it reaches Beacon
Beacon has no direct connection to this device. Its data arrives through Apple Health: the vendor's own app writes to Health, and Beacon reads from there. So what Beacon can see is whatever that app chooses to write — Beacon can't ask for more than the vendor shares.
Two things follow:
- Set up the vendor's app first, and allow it to write to Apple Health. Beacon reads whatever lands.
- Your full history imports. Apple Health is the one connection Beacon reads all the way back, not just the last 90 days.
Attribution
Beacon recognises this device by name, so its readings are credited to it rather than to Apple Health generically. That matters when you wear more than one thing: two sources reporting the same night or the same run are kept apart instead of being averaged into a number that describes neither.