Pico projectors have lately been investigated as mobile display and interaction devices. We propose to use them as 'light beams': Everyday objects sojourning in a beam are turned into dedicated projection surfaces and tangible interaction devices. While this has been explored for large projectors, the affordances of pico projectors are fundamentally different: they have a very small and strictly limited projection ray and can be carried around in a nomadic way during the day. Thus it is unclear how this could be actually leveraged for tangible interaction with physical, real world objects.
Jochen Huber, Jürgen Steimle, Chunyuan Liao, Qiong Liu and Max Mühlhäuser: "LightBeam: Nomadic Pico Projector Interaction with Real World Objects", In CHI '12: Extended Abstracts of the 30th International Conference on Human Factors in Computing Systems, ACM Press, 2012. (to appear)
Jochen Huber, Chunyuan Liao, Jürgen Steimle, Qiong Liu: "Toward Bimanual Interactions with Mobile Projectors on Arbitrary Surfaces" , In Proceedings of MP²: Workshop on Mobile and Personal Projection in conjunction with CHI 2011, 2011.