Occupied
I have two roommates, one of which lives on the opposite side of the apartment from our bathroom. As a result, there are times when he takes his 45 second trek to the bathroom just to learn that it is occupied. This device will be able to detect if the bathroom is available or not. I plan on putting sensors in the bathroom that detect if the door is closed, the light is on, or if there's moisture in the air. This'll be connected to an LED light that I will place near his bedroom.