We’ve heard of quite a few apps that aren’t working with Apple’s new operating system: Mac OS X Lion. So it’s good to see some apps starting to get updates that now make them compatible with Lion. MacStories.net features one such app that’s a tracking app for stolen computers that lets you remotely lock/unlock a machine, and see who’s using it via webcam integration. The app is called Witness, and here’s how MacStories.net describes it:

The Witness app, available on the Mac as a System Preferences panel, iOS and the web, leverages the Mac’s built-in FaceTime camera (nèe iSight) to send you “mugshots” of whoever is using a locked computer — Witness can also detect motion in front of your screen and send you a push notification as soon as something happens.

With a series of updates, the Orbicule developers have updated Witness to fully integrate with OS X Lion and its new authentication window, which in version 1.2 is used instead of the old screensaver method. Now, you can choose to lock your Mac either using Witness’ own lock system, or through the default login screen in Lion.

Like we said, it’s good to see more and more apps becoming compatible by the day. And Witness sure seems a pretty important option this day and age (sigh) at a pretty good price: $39.

We’re heading to purchase it right now. How ’bout you?