Disadvantages include lower positional accuracy and positional drift which can compound over time.
Benefits of using Inertial systems include: capturing in a variety of environments including tight spaces, no solving, portability, and large capture areas.
capture systems directly track body joint angles and are often referred to as exoskeleton motion capture systems, due to the way the sensors are attached to the body. and are real-time, relatively low-cost, free-of-occlusion, and wireless (untethered) systems that have unlimited capture volume.