BlendArMocap is a Blender add-on to preform Hand, Face and Pose Detection in Blender using just a Webcam.
The detected data can be easily transferred to rifigy rigs.
Blender has to be started with elevated permissions in order to install the required packages
You can download BlendArMocap for free by entering a 0. Feel free to donate to support the development.
BlendArMocap - Beta