Soma Mukhopadhyay is the creator of the Rapid Prompting Method. Soma's son Tito has Autism. While living in India she developed the method that taught him to communicate by first using a letterboard, then to write, and then to type, and now he can speak. She then came to America and began teaching other students using her methods. After appearing on 60 Minutes and other new channels, it spread like wildfire. Hear her explain how the method works. 
Note: Due to her accent it may be difficult to comprehend everything she says. If so, please visit our YouTube channel  Robbie and Me: Autism Reality where all the text is transcribed.