

As hugin said, the best way to wash oils off your hands is with other oils. Pour a little bit of whatever cooking oil you have on your hands and make sure to thoroughly spread it on your hands, like in between your fingers and under your nails, then wash with hot water and soap. The capsaicin oils will mix with the cooking oils, dilute, and be more noticeable to remove. This also works for poison ivy oils and pine sap
Even so, each individual button needs to be connected to that PCB separately, and will only have the function of what it says on the button, or possibly a couple hidden functions through programming.
Touch screens are essentially one connection for infinite buttons with different screens and menus.