uTrack: 3D Input Using Two Magnetic Sensors
While much progress has been made in wearable computing in recent years, input techniques remain a key challenge. Here we introduce uTrack, a technique to convert the thumb and fingers into a 3D input system using magnetic field (MF) sensing. A user wears a pair of magnetometers on the back of their fingers and a permanent magnet affixed to the back of the thumb. By moving the thumb across the fingers, we obtain a continuous input stream that can be used for 3D pointing.