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According to news reports, Icelanders have a new smartphone app to help avoid accidental incest. The app, known as the Islendiga App, lets users "bump" phones and emits a warning alarm if they are closely related. Iceland has a population of 320,000 and most everyone is distantly related. Iceland was unpopulated before Norse settlers arrived in 874 A.D. Most of the population shares descent from a group of 9th century Viking settlers. The Icelandic sagas were written about 1,000 years ago, with page after page of genealogy, and there is an online database with genealogical details of almost the entire population. The Book of Icelanders database was developed in 1997 and has information on 95% of all Icelanders who have lived in the past 300 years. The database can be scoured online by any Icelandic citizen and the app makes the data available on their mobile phones. It is currently available for Android phones, and they hope to develop an iPhone version.