Various cameras can be used to estimate the absolute position of the joints in the skeleton of the hand. From a simple webcam, to a network of distributed infrared cameras, to depth-sensor cameras, here's an overview of the different sensors that enable you to track hands and fingers in space.

Accessing Theater: Theater und Multimedia – tools - presented by Dr. Greg Beller.

On some XR devices it is possible to get fully articulated information about the user’s hands when they are used as input sources. The WebXR Hand Input module expands the WebXR Device API with the functionality to track articulated hand poses. This API exposes the poses of each of the users' hand skeleton joints. This can be used to do gesture detection or to render a hand model in VR scenarios.