Systems and methods for augmented reality

A method to display augmented reality, comprising:

• emitting, through an electromagnetic field emitter, a known magnetic field;
• measuring, through an electromagnetic sensor, a parameter related to a magnetic flux at the electromagnetic sensor as a result of the emitted known magnetic field, wherein world coordinates of the electromagnetic sensor are known;
• determining pose information relative to the electromagnetic field emitter based at least in part on the measured parameter related to the magnetic flux at the electromagnetic sensor;
• and
• displaying virtual content to a user based at least in part on the determined pose information relative to the electromagnetic field emitter.

An augmented reality display system, comprising:

• a handheld component housing an electromagnetic field emitter, the electromagnetic field emitter emitting a known magnetic field;
• a head mounted component having a display system that displays virtual content to a user, the head mounted component coupled to one or more electromagnetic sensors that detect the magnetic field emitted by the electromagnetic field emitter housed in the handheld component, wherein a head pose is known;
• and
• a controller communicatively coupled to the handheld component and the head mounted component, the controller receiving magnetic field data from the handheld component, and receiving sensor data from the head mounted component, wherein the controller determines a hand pose based at least in part on the received magnetic field data and the received sensor data,
• wherein the display system modifies the virtual content displayed to the user based at least in part on the determined hand pose.