Measuring Device-Specific Physical Activity Trackability in Multi-Device Environments.

Wrist-worn wearables such as smartwatches and fitness trackers have become widely used with smartphones in recent years. Interestingly, both types of devices support physical activity tracking, but that is only available when users wear or carry their devices, and thus, trackability is heavily influenced by user contexts. To analyze physical activity trackability in a multi-device environment, this paper explores device-specific coverage measures based on activity bouts.