Description
Wearable devices (smartwatches, fitness trackers, body-worn IMUs) are the device-bound baseline for human-activity recognition that Wi-Fi sensing aims to displace. They produce clean per-subject motion data (IMU, heart-rate, GPS) but require the user to wear the device. In the thesis, wearables appear primarily as ground-truth label generators in fused datasets ("smartwatch IMU labels gait while CSI is passively logged") and as the baseline that "device-free" CSI sensing claims to match.
Specs / capabilities
- 6/9-axis IMU (see imu, accelerometer)
- Photoplethysmography (PPG) for heart rate
- BLE / Wi-Fi for sync and uplink
- Battery 1-7 days typical
Used by (papers)
- Wearable-baseline HAR comparisons
- Cross-modal supervision (wearable label → CSI student model)