In this talk Luz Rello will present the research behind Dytective conducted at Carnegie Mellon University (USA) and licensed to the social company, Change Dyslexia. Dytective is a tool that combines machine learning and computer games to detect risk of dyslexia and ameliorate the symptoms of dyslexia through personalised exercises. It has been used over 200,000 times in the Spanish speaking countries, becoming the most used screener online. Recently, this platform has been adopted by 107 public schools in collaboration with the Council of Education of the Regional Government of Madrid.