Subtitled movie glasses

From engadget:

"a research team at the University Carlos III of Madrid has unveiled an upgrade for the problematic rear-window captioning system currently used by the deaf: a glasses-mounted subtitle screen. Featuring a three hour battery life and a 50 meter range..."

http://www.engadget.com/2007/04/19/subtitle-glasses-could-help-deaf-foreigners-at-the-movies/