I do wonder tho, if someone is on private property and are unaware they are being photographed and it is known they certainly would not have consented if they did - what is the difference between that and peeping tom - in fact worse as they are then selling the pictures?
What I mean is, secret photos are one thing, but secret photos of someone undressed when they think they are in private is to me a sexual offence surely? Landlords who install secret cameras go to jail - I dont see why it is different in this case.