I don't know if this is the right way of describing it, but I need to activate an area of capacitance on a touchscreen by applying some current to a piece of conducting material like tinfoil. I am needing to remotely turn pages on a touchscreen ereading device with a microcontroller, and this is one method of doing that. In an earlier post on this form, someone said to use an n channel mosfet, in order to switch the capacitance on or off, or something like that. Based on my limited understanding, a mosfet is used to provide higher voltages and current, but I only need to provide a few milliamps. Should I still consider using one, or is there a better way?