Compared to camera-based MOCAP, wearable sensors are particularly valued for what capability?

• A. Requiring no setup and always accurate in lab.
• B. Allowing continuous monitoring outside the lab in natural environments.
• C. Delivering higher spatial resolution than all MOCAP systems.
• D. Eliminating the need for data interpretation.

Answer: (B)

Portable, body-worn sensors provide the ability to monitor movement outside the lab in natural environments. Because they are attached to the body and don’t rely on a fixed camera network or line-of-sight, they can record everyday activities in real-world settings—from homes and clinics to outdoor environments—over longer periods. This makes them especially valuable for rehabilitation and real-life performance assessment, where the context matters and people don’t stay perfectly still or perfectly within a camera’s view. In contrast, camera-based MOCAP systems require a controlled setup: cameras arranged around an area, markers on the body, consistent lighting, and ample space, which limits data collection to laboratory or carefully staged situations. The other statements aren’t accurate: wearable sensors do require setup and calibration, they don’t inherently provide higher spatial resolution than all optical systems, and interpreting the data is still necessary.