tabulaTouch, an interactive table project by Stefano Baraldi carried out at Natural Interaction. Slightly similar to Jeff Han's work, it's mostly because this kind of interface is trendy lately; so it's another occurence of such concept.
tabulaTouch can sense multiple points of contact on surfaces of different shape and size, where gestures can be recognized and become expressive actions.The first case of study has beel tabulaMaps, an application for the collaborative management of digital maps that features the intuitive roto-translation approach; we are planning to integrate it with GIS products.
We are also researching interesting media-handling templates that will bring the platform in public spaces, as well as ad-hoc environments, while iO Agency is engineering the hardware.
There is also a video on YouTube