Sure, you could spend a few hundred bucks installing a video security system around your house. Or, you could just use the Macs you already have spread around the house instead to stay safe. With Orbicule’s Witness ($39), you can make those machines that would otherwise be sitting quiet work for you.
How does it work? Install the software on as many Macs in your house as you’d like, and then download the free remote app for your iPad or iPhone, or use the web app on any other computer. With the app, you can lock up any or all of the computers. Then if somebody walks by or anything else trips the FaceTime camera, you instantly get a push notification and can see stills and video of what’s going on. Easy enough, right?