Method, apparatus, and system for capacitive touch communication

A method for using a user device to communicate with a touch-sensor of an electronic device, the method comprising:

• generating, by the user device, a signal encoding a data sequence;
• communicating the signal from the user device, to the electronic device by varying a capacitance of the touch-screen thereof;
• and
• receiving and decoding, by the electronic device, the signal to obtain the data sequence.

A system for capacitive touch communication, the system comprising:

• a first device comprising:
• a signal generating circuit configured to generate a signal encoded with a data sequence;
• and
• at least one electrode electrically coupled to the circuit and configured to communicate the modulated signal to a second device by varying a capacitance of a capacitive touch screen of the second device;
• and
• the second device comprising:
• a processor;
• a capacitive touch sensor;
• and
• a computer-readable storage medium storing instructions that, when executed, cause the processor to:
• receive a sequence of touch events from the touch sensor generated in response to the varying capacitance of the capacitive touch-screen caused by the device;
• and
• decode the sequence of touch events to obtain the encoded data sequence.