Gesture and expression recognition applied to the recognition and generation of sign language. A bidirectional communication platform between deaf and hearing people has been developed and patented. Potential Application Sectors: Any sector Expected Results or Competitive Advantages: This system operates in real time, in a simple and fast manner. It is capable of recognizing complete sentences, unlike other platforms that only offer sign-by-sign recognition. To achieve this communication, only a mobile device with a camera and screen is needed.