Electronic display comprising magnetometers

An electronic interactive display comprising:

• a substrate;
• a power source;
• an interactive display layer comprised on the substrate;
• a plurality of magnetometers defining a reference coordinate system of the electronic interactive display, wherein each magnetometer of the plurality of magnetometers has a rigid spatial relationship to the other magnetometers;
• and
• processing circuitry communicably coupled to at least the interactive display layer and the plurality of magnetometers;
• wherein the interactive display layer comprises a magnetically actuatable material;
• wherein the interactive display layer faces a user of the electronic interactive display in use, and wherein a portion of the interactive display layer is configurable from least a first visual state into a second visual state based on a magnetic stimulus;
• wherein the plurality of magnetometers is configured to perform magnetic field measurements of a user borne device comprising at least one magnet within a sensing volume proximate to the interactive display layer, and to provide magnetic field measurement data based on the magnetic field measurements to the processing circuitry;
• and
• wherein the processing circuitry is configured to receive the magnetic field measurement data, and to determine the position and/or orientation, relative to the interactive display layer, of the user borne device when the at least one user borne device is present in the sensing volume.