'The Watch Anywhere Monitoring Camera' promised to all partners who're not where they are supposed to be to watch their exploits live on a mobile phone.
The revolutionary hardware, which resembles a computer webcam, is billed as an anti-theft system - but can also be used to catch wayward lovers and truant children.
Users simply install the device in the room they wish to monitor. If the motion sensor detects a disturbance, it sends a three-second video of the event to the owner's mobile phone.
Users can also dial up to receive a photo at any time or listen live through the built-in microphone. The camera even has an infra-red mode to capture night-time shenanigans.
But civil liberties advocates fear such technology could be a godsend to peeping toms.
"What's to stop someone installing it in their bathroom and recording secret footage of their guests?" said Michael Pearce, SC, vice-president of the Victorian Council for Civil Liberties.
The Watch Anywhere Camera costs 495 Australian Dollars.