I did a little more research into capactive and resistive touch screens.
My main objective for the touchscreen is to turn on / off the underwater robot on land, and at the same time for displaying parameters (only) underwater.
Hence is it possible to configure the arduino mega to reject any non stylus inputs to the touch screen ( resistive ) to allow it to be used underwater after launching ?
At the same time, I will be using interrupt fuctions that will reactivate the touch screen based on my other outputs from sensors, eg. pressure etc.
If the input surface of the touch screen is exposed underwater, is there any methods to counteract the ~9.5 pounds of force?