Electronic card and capacitive touch sensing method thereof

An electronic card, comprising at least one integrated circuit (IC) and a manually controlled touch sensing means electrically connected to the IC, the touch sensing means including a plurality of electrodes that together constitute a capacitive touch area and respectively generate a capacitance value to the IC for the latter to determine the validity of any touch in the capacitive touch area, and the IC and the touch sensing means being sealed in at least one isolation material layer to complete the electronic card, being characterized in that:

• the IC has a preset reference value, based on which the IC determines the validity of received capacitance values;
• and
• the touch sensing means sealed in the isolation material layer is spaced from two opposite contact surfaces of the electronic card by different distances;
• whereby when a user touches at least one of the two contact surfaces of the electronic card, the IC determines according to the reference value the validity of the capacitance value generated by the electrode corresponding to the touched position and further determines whether a data or a command input by the user's touch is valid or not.