I don't see how the drive mechanism is any different than a Sphero toy, but I like the dual gimballed camera mechanism. I assume the cameras are independently controllable in pan and tilt, like a chameleon? If you could point them in the same direction, you could probably get reasonable stereo vision to a remote operator.
This is an interesting alternative arrangement for a security patrol device, and it would appear to have avoided quite a few of the common challenges with it's unique form factor. But it would be fairly simple to neutralize with a method similar to the one used by biologists for capturing skunks. But otherwise it is quite an intersting package. A smaller version would probably sell very well as a high-class toy. Just think, a two inch model could probably go almost anywhere and not be noticed. But scaling down might be quite a challenge.
"The patented drive-mechanism uses a motorized pendulum to propel the Guardbot by changing the center of gravity for back-and-forth movement, as well as 360-degree turns" sounds like an ingenious way to take advantage of a sphere's capability for directional momentum. It reminds me of a hamster ball with a hamster in it - the hamster's center of gravity affecting the ball's motion and direction while moving about the floor. I am wondering if any of these are in service yet - the variety of payloads make the extremely versatile and I could see them being used in many different applications.
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