If you own both a Mac and an iPad gadget, it's a fair bet that you also have a home stuffed with other electronic gear, the kind of gear that burglars like to, well, burglarize. Luckily, there's an app for that.
It's called Witness, and it turns your Mac into a motion-activated security camera. When running, it monitors your room with using the iSight camera, and when it detects movement it sends an alert to your iPhone or iPad.
Included with the alert are photos and videos, so you can either rest easy knowing that Kitty has jumped up on the desk again, or watch in horror as your home is emptied miles from where you are standing.
Forgot to activate the alarm? You can do it remotely from the phone.
Witness seems like a great idea, but for a couple of things: you need to leave your Mac running 24x7 while you are away, which is something of a waste of electricity. It also requires an internet connection, so the smart thief could just cut the power on entry — it's pretty unlikely that your Mac is out in the hallway where the breakers are often kept.
Aside from this, though, it's nice not to be worrying about the house when you're out. The Mac App costs $40, and the companion iOS app is free.
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