A system much like this was used as a plot device in a Danish crime novel written in 2000. In the book ("Mailstorm") the protagonist witnesses what appears to b

A system much like this was used as a plot device in a Danish crime novel written in 2000. In the book ("Mailstorm") the protagonist witnesses what appears to be a murder on the 'random webcam feed as a screensaver'-network. Later he realizes the internet connection was down at the time, so it must have been running on LAN...