Inter Touch Sensor Communications

A touch-sensitive device comprising a controller, the controller communicatively coupled to a plurality of touch electrodes, the controller operable to communicate with a second touch-sensitive device by:

• listening for a synchronization signal transmitted by the second touch-sensitive device, the listening comprising detecting capacitance changes at one or more of the plurality of touch electrodes;
• establishing a communications session with the second touch-sensitive device after receiving the synchronization signal;
• and
• transmitting data, using one or more of the plurality of touch electrodes, to the second touch-sensitive device after establishing the communications session.

A method of communicating between a first touch sensor and a second touch sensor, the method comprising:

• listening, by the first touch sensor, for a synchronization signal transmitted by the second touch sensor, the listening comprising detecting capacitance changes at one or more of a plurality of touch electrodes of the first touch sensor;
• establishing a communications session between the first and second touch sensors after the first touch sensor receives the synchronization signal;
• and
• transmitting data, using one or more of the touch electrodes of the first touch sensor, to the second touch sensor after establishing the communications session.