How can you recognize sign language in a mobile application?

Is it possible to recognize sign language (like American Si开发者_开发问答gn Language, ASL) in an iPhone or Android application?

Are there libraries that are available to do this? If not, how would you suggest I get started in writing an application that could recognize sign language?

Yes, it should be possible with the video camera. However, I am not aware of an existing code base that supports this. You could look into OpenCV. It is available for both iPhone and android.