Remote controlled screen tapper

I am trying to design a small gadget that can tap a screen in seven different places of a screen. There will be 7 individual screen tappers that will be hooked into a relay that connects to a raspberry pi. I need code so that I can press any button on the remote 1-7 and whatever number I press will activate a screen tapper that correlates to that number. For example, I press number 7 on the remote and the remote sends a signal to the raspberry pi, which then send a signal to the relay that activates the seventh tapper and taps the screen once.