Devices guides

The shape of a wearable changes the engineering questions you need to ask. A watch supports interactions during an activity; a ring may supply account-based summaries; a connected garment introduces placement and calibration decisions. A heart rate monitor can present a nearby sensor protocol with its own payload structure. These device guides keep those differences visible.

Use this collection to learn what to verify before promising compatibility. Identify the available developer surface, the actual measurements, the meaning of timestamps, and any signals that describe data availability. Then test a representative device through connection loss and ordinary use. The goal is a product experience that accurately reflects the source’s capabilities, whether you are building a single-device prototype or adding another category to an existing application.