In his web seminar...
In his web seminar the Tech admin at the centre of this mess, Mike Perbix, explains in great detail exactly how it works.
I dont remember all the exact details but in essence when the laptop is turned on and once it establishes a connection to the internet it will connect to the LANrev server back at the school on a port published on the school's firewall. The LANrev software is running at all times on the laptop and can not be switched off and doing so is an excludable offence under the school rules.
The LANrev software by default sits in remote admin mode so that the school IT admin team can remotely manage the machine. If the laptop has been flagged as stolen then once it has established its connection to the LANrev server the LANrev software on the laptop will kick into remote observation mode and start taking screenshots and photos every 15 minutes and dispatching them to the school LANrev server.
I am pretty sure this system only works when the machine is turned on however I am not sure if it keeps taking snapshots and photos once it has been triggered even when it is not on the net until it is told not to do so when it connects back up with the LANrev server in the school.
I think he mentioned that he could activate the camera at any time on any connected laptop and take snapshots. I think I remember that he was boasting that the camera could be set to take pictures every 15 minutes when not connected to the home network. You and I would presume that the home network was the one at the students home but I suspect that he could have meant the "home" network in the school that the LANrev server was situated on.
It is a while since I last saw the web seminar that he did so I may have some of the details wrong. I last saw it when the scandal broke. The full seminar can be found in 6 parts on youtube by searching youtube for "Mike Perbix LANrev" and you used to (and probably still can although I havent tried) be able to access the seminar through links in the Blog page linked to at the bottom of the article that we are comenting on.
Mike Perbix's web seminar video was at one time part of the promotional material for LANrev however LANrev have now disavowed him and removed the webcam functionality from their product by all accounts