Portico

Daniel Avrahami, Jacob O. Wobbrock, Shahram Izadi
2011 Proceedings of the 24th annual ACM symposium on User interface software and technology - UIST '11  
We present Portico, a portable system for enabling tangible interaction on and around tablet computers. Two cameras on small foldable arms are positioned above the display to recognize a variety of physical objects placed on or around the tablet. These cameras have a larger field-of-view than the screen, allowing Portico to extend interaction significantly beyond the tablet itself. Our prototype, which uses a 12" tablet, delivers an interaction space six times the size of the tablet screen.
more » ... ico thus allows tablets to extend both their sensing capabilities and interaction space without sacrificing portability. We describe the design of our system and present a number of applications that demonstrate Portico's unique capability to track objects. We focus on a number of fun applications that demonstrate how such a device can be used as a low-cost way to create personal surface computing experiences. Finally, we discuss the challenges in supporting tangible interaction beyond the screen and describe possible mechanisms for overcoming them.
doi:10.1145/2047196.2047241 dblp:conf/uist/AvrahamiWI11 fatcat:me4stfjilbdubgllklfd4conwy