Magnetic hand tracking for human-computer interface

Hand tracking is useful in human-computer interface. In this work, permanent magnets and contactless magnetic sensors are used to track finger motion. A magnet patch is affixed to each fingernail to mark the location of the fingertip. When fingers move, the combined magnetic fields produced by the magnets at fingertips are recorded by a set of magnetic sensors around a wristband. The recorded data are fed to a source localization algorithm to reconstruct the fingertip locations and estimate hand posture.