What tools are available when searching for a missing person? Police officer Guðmundur Fylkisson and Gunnar Ingimarsson, specialist with Míla and member of the regional council for search and rescue teams in the Reykjavík area, discuss how police can track missing persons in search operations. Operations where valuable lessons were learned will be reviewed. We will discuss what can be achieved with phone tracking and how incorrect conclusions may be drawn from phone network data.