Here Bridges discusses the technique which the filmmakers used to de-age him for the film...
"It was challenging, in that I got a little taste of this new technology of acting what they call 'in the volume' and making movies without cameras," Bridges says. "It's a completely different deal. That was kind of a challenge."
We all got a glimpse of Bridges' dual role in the teaser for the film, as well as the new, updated look of the Tron world. But Bridges says this is only the tip of the iceberg, and compares the original film's technology to something like "an old black-and-white TV show" when compared to the new movie.
"All that technology that we were going to use in the movie itself is used in the trailer," Bridges says. "It wasn't as highly polished as the movie is going to be, but it gives you a little peek into what you might find. That teaser was something they do kind of often with movies, and I think it's a good idea. The Coen brothers told me they did it with making Blood Simple. Before they even shoot the movie at all, they shoot the trailer of the movie, as if it was already made, and then they use that to entice the financiers. So, even though it was a Disney property, Disney wanted them to shoot this pretty expensive trailer. I don't know how much it cost, but it was pretty expensive."
Tron:Legacy is due for release about a year from now.
Thanks to IGN for the info.
Ozy:This film looks cool to me!