We present TMotion, a self-contained 3D input that enables spatial interactions around mobile using a magnetic sensing technique. Using a single magnetometer from the mobile device, we can track the 3D position of the permanent magnet embedded in the prototype along with an inertial measurement unit. By numerically solving non-linear magnetic field equations with known orientation from inertial measurement unit (IMU), we attain a tracking rate greater than 30Hz based solely on the mobile device computation. We describe the working principle of TMotion and example applications illustrating its capability.
TMotion REF is another solution that enables spatial interaction around mobile device using a magnetic sensing and a specially designed stylus.
TMotion: Embedded 3D Mobile Input using Magnetic Sensing Technique
UIST
Computer Science