Capacitive sensors measure changes in capacitance to detect differences in their environment. They are commonly used as touchscreens to detect the location of fingers or a stylus on the screens of smart phones, tablets, computer screens, music players, and computer touch pads, though many other uses exist in scientific research and industry. Remcom’s XFdtd EM Simulation Software can compute the capacitance of complex sensor designs, allowing the designer to choose the best geometry for their needs without prototyping.