Mobile passive joystick with magnet sensing

A system, comprising:

• a human interface device, comprising:
• a top portion comprising a permanent magnet that is adapted to generate a magnetic field distribution to encode user input received by the human interface device via forces applied by a user;
• and
• a bottom portion adapted to:
• reversibly secure the human interface device to a surface,
• reversibly secure the top portion to the bottom portion via a rotatable joint, and
• deform to enable the top portion to tilt with respect to a point on the surface to while the human interface device is secured to the surface and the top portion is secured to the bottom portion;
• and
• a sensing system adapted to sense the magnetic field distribution to provide user input from the user to a data processing system.