Dr. Udi Davidovich is a social and clinical psychologist. He works at the Amsterdam Public Health Service in association with the University of Amsterdam, the Academic Medical Centre as a senior researcher and head of the unit for Online Research and Prevention. In recent years, Udi has specialized in the usage of the internet and mobile technologies as tools for the development and evaluation of prevention interventions. Udi is a permanent member of the steering committee for the national online prevention of HIV and STI among MSM and the winner of the 2009 Galjaard National prize for the best public health campaign. Udi is an annual guest lecturer at the University of Amsterdam, The Free University Amsterdam, and the University of Leiden.