We have touched on the work of Clarity International (not to be confused with Planar / Clarity / Coolsign) before [1] and their work with large screen, interactive touch walls.
I guess it is their links with BT but they appear every year at the Mobile World Congress events in Barcelona – coming soon, 11th to 14th February 2008.
This year Clarity International are showcasing five major film festivals on an interactive wall – they will be in Hall 7 and will be showcasing content made especially for mobile with examples from Cannes, Shanghai, Sundance, Locarno and Bollywood.
www.mofilm.com [2]