Why stop there? You could put sensors everywhere you in your residence. "I'm in the kitchen!" "I'm on the toilet!" "I'm sleeping!" "I'm clinging to the ceiling like Spiderman!" "I'm not at home!"
Just saying, if there was something that would tell people when I was clinging to the cieling like spiderman, I would pay any amount of money to get it. Provided it came with cieling-clinging tools like giant suction cups and radioactive spiders and stuff.
