The security system for my office uses several dozen IP cameras, a server to run the application, and a NAS for storage. It uses those type of "no user interaction required" pop-up notifications to alert "camera such-and-such has detected motion". For me as the IT guy, it's annoying as heck whenever I need to go on there to configure something. However if we paid a guy to sit there and monitor those all day long, I can see where they'd be very helpful. So, good luck with the software!
