I try to control everything by voice, I have thought about presence sensors. I use the alarm to switch all the stuff off when I am out or in bed, apart from heating, I can control that from alexa or the RF lightwave app. I control most of the stuff in the car by voice I just find telling stuff to happen much easier, especially so when driving, I hate looking for buttons and stuff. I like the idea of presence sensors, I liked JW's smart lights that come on when you open the door when its dark. I have enough trouble hiding most of the gadgets I have floating around the house without adding more detectors