Where Are Your Keys

I read an article or two on this new language learning method. Some are touting it as revolutionary, so I had to check it out a little. It is called Where Are Your Keys and employs a structured set of basic dialogues. It is clearly engaging for the right group of people, but I don't see how it is revolutionary in any way. I have an old Berlitz French book that employs pretty-much the same techniques. Except for the sign language, that is. Sign language? Yeah, they actually employ sign language as a sort of medium or reinforcement of the spoken language. I find it a little distracting. Maybe I have it wrong (I only viewed a few demo videos for a few minutes) but it's not for me.