Apparatus for object information detection and methods of using same

An apparatus including a sensor sensitive to capacitive coupling comprising:

• a sensor including an array of active electrodes and an array of passive electrodes, the active and passive array forming a grid;
• a switching apparatus operative to simultaneously transmit signals on at least two active electrodes, wherein at least one of the signals simultaneously transmitted on each of the at least two active electrodes has a frequency that is different from a frequency of a signal transmitted on another electrode of the at least two active electrodes;
• and
• sensor electronics configured to sample an output signal on at least one passive electrode crossing the at least two active electrodes, wherein the output signal is responsive to capacitive coupling formed between the at least two active electrodes and the at least one passive electrode;
• wherein the output signal provides information regarding at least one object located on the sensor.