Users point their specially modified and enhanced handheld projector at a flat surface and their projections, whether they be a video game character or a document icon, interact with and are spatially aware of nearby projections. For example, each user could control a boxer and the characters would only take a swing at each other when the projections were moved close enough. Or something as simple as sharing a file between two devices could be made overly visual by dragging a file into a folder.
The concept is novel, but the fact that the technology can be used anywhere, without a special tracking-friendly environment, is what's most intriguing. The handheld projectors actually project both a single colour image that users can see, as well as invisible infrared tracking data that's only visible to a camera mounted atop each device. At the moment the tracking and processing that allows the projections to interact is handled by a laptop both projectors remain tethered to, but eventually those duties could be handed off to the devices themselves as they communicate wirelessly. [SideBySide via Creative Applications]