Credit for @Nasir Ali in the Facebook group of Raspberry pi. As the picture showing you can turn in and turn of your pi’s GPIO, or execute any bash command with the Facebook Chatbot. You have to specify the autoreply for specific messages. Someone mentioned that maybe easy to hack, but according to Ali it is easy to bypass with a simple exception
If sender_id == “my ID HERE”:
Later on maybe I am going to play with it. Thanks Ali!