The project Insecam collects the streams of surveillance cameras, among them live cameras in Prague. These images are publicly available without any hacking, since their owners put them online and chose (or forgot) to restrict access with a password.
You can see street views, parking lots, offices, and even what seems to be private homes. The administrators of Insecam promise to protect people’s privacy, although it is not really clear to me what they mean by “filtered cameras”.
Only filtered cameras are available now. This way none of the cameras on Insecam invade anybody’s private life.
At least, this project is a reminder that the Internet of Things requires proper privacy protection.