I wasnt thinking that it was clever, I was thinking more that its a bit of a security risk. About twenty years ago when I was an engineer, one of our customers was burgled. The alarm had gone off front door he was called out, he arrived called the engineer who found nothing wrong reset the alarm, an hour later they are back, engineer cant find anything wrong changes the contact, 30 mins later alarm goes off again engineer swaps the zones and omits the old zone the alarm goes off again keyholder decides not to set the alarm again that night, and guess what next morning shops empty. If I want to burgle one of your videofied sites I just fill the house with moths wait a couple of hours sorted