I just saw this article in today’s Hollywood Reporter. I had never seen or heard about this (although I am sure there are some of you who have). Basically, it is a kind of “sound flashlight” that can aim sound to a specific person or place, without anyone else hearing it. Read the article, but this could change a lot of things - rock concerts, movies, musicals, television…I am impressed!
http://www.hollywoodreporter.com/thr/new_media/article_display.jsp?vnu_content_id=1939141