When Microsoft demonstrated Surface we were impressed. Then, when they later showed off SecondLight , we were even more impressed — and then were sorry for anyone who had made the considerable investment in one of the earlier, singularly-lighted tables. We’re feeling better now (thanks for asking) after seeing a video demonstration of XRay, a mobile app from Stimulant (who earlier blended a Wii Balance Board with a Surface) that provides similar functionality; letting you effectively see secondary images on the touch-table. The app relies on the ability of the Surface to detect where the phones are, communicating that position to tell them what to display and in what orientation.

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Video: Stimulant’s XRay mobile app brings SecondLight to any ‘ol Surface