A touch screen method comprising: providing a touch screen having a transparent capacitive sensing medium, the transparent capacitive sensing medium including a first layer having a plurality of first conductive lines that are electrically isolated from one another and formed from a transparent conductive material and a second layer spatially separated from the first layer and having a plurality of second conductive lines that are electrically isolated from one another and formed from a transparent conductive material, the plurality of second conductive lines being positioned transverse to the plurality of first conductive lines, the intersection of transverse lines forming sensing points being positioned at different locations in the plane of the touch screen; reducing parasitic capacitance by coupling at least one of the plurality of second conductive lines to an inverting input of an inverting amplifier and coupling a non-inverting input of the inverting amplifier to a reference voltage, the output of the inverting amplifier being coupled back to its inverting input through a capacitor; driving the plurality of sensing points of the touch screen using the plurality of first conductive lines; reading outputs from the plurality of second conductive lines; storing the outputs from the plurality of second conductive lines at the same time for each given first conductive line; and multiplexing the stored outputs to sequentially release the stored outputs one at a time through an output channel to an analog to digital converter (ADC 270) for sending each of the digitized values to a digital signal processor (DSP 272) operatively coupled to the analog to digital converter (ADC 270) through another channel; based on the outputs, producing and analyzing an image of the touch screen plane at one moment in time in order to determine where objects are touching the touch screen; and comparing the current image to a past image in order to determine a change at each of the objects touching the touch screen. providing a touch screen having a transparent capacitive sensing medium, the transparent capacitive sensing medium including a first layer having a plurality of first conductive lines that are electrically isolated from one another and formed from a transparent conductive material and a second layer spatially separated from the first layer and having a plurality of second conductive lines that are electrically isolated from one another and formed from a transparent conductive material, the plurality of second conductive lines being positioned transverse to the plurality of first conductive lines, the intersection of transverse lines forming sensing points being positioned at different locations in the plane of the touch screen; reducing parasitic capacitance by coupling at least one of the plurality of second conductive lines to an inverting input of an inverting amplifier and coupling a non-inverting input of the inverting amplifier to a reference voltage, the output of the inverting amplifier being coupled back to its inverting input through a capacitor; driving the plurality of sensing points of the touch screen using the plurality of first conductive lines; reading outputs from the plurality of second conductive lines; storing the outputs from the plurality of second conductive lines at the same time for each given first conductive line; and multiplexing the stored outputs to sequentially release the stored outputs one at a time through an output channel to an analog to digital converter (ADC 270) for sending each of the digitized values to a digital signal processor (DSP 272) operatively coupled to the analog to digital converter (ADC 270) through another channel; based on the outputs, producing and analyzing an image of the touch screen plane at one moment in time in order to determine where objects are touching the touch screen; and comparing the current image to a past image in order to determine a change at each of the objects touching the touch screen.