Electronic devices and method for near field communication between two electronic devices

A near field communication method for using in an electronic device, comprising:

• generating a request when sensing a distance to an external object is under a predetermined threshold;
• transmitting the request via a plurality of transmitting electrodes of the electronic device to the external object;
• receiving a response from the external object via a plurality of receiving electrodes of the electronic device;
• and
• performing an action after receiving the response.

An electronic device, comprising:

• a touch screen, comprising a plurality of transmitting electrodes and a plurality of receiving electrodes configured for sensing touch events on the touch screen;
• a proximity sensor, configured for sensing approach of an external object and sensing a distance from the external object to the electronic device;
• and
• a processor, coupled to the touch screen and the proximity sensor,
• wherein when the proximity sensor senses a the distance to the external object is under a predetermined threshold, the processor generates a request, transmits the request to the external object via the transmitting electrodes, receives a response from the external object via the receiving electrodes, and performs an action after receiving the response,
• wherein the processor transmits the request and receives the response in a handshake procedure for establishing a wireless communication link with the external object, and
• wherein the proximity sensor keeps sensing the distance to the external object, and when the distance to the external object is not under the predetermined threshold, the processor terminates the handshake procedure.