Olympic torch, lol!
I just need to turn on lights, if anyone gets beside my bed. I have a flashlight in case there's powercut. Noone has ever made it that far yet - husband hung a portrait of me in the vestibule, and the picture stares at the comer, when the door is opened, you can't miss looking at it. In fact, we've also found the door wide open several times in the morning, and judging by the mess at the front door - broken flower pots and fallen down bikes - they were in hurry to leave...