In a country that is home to less than 330,000 people, it is easy to be related to someone you don’t even know. It could turn into a real problem if you come to a family dinner and find your date from last night sitting at the table. So Icelandic software engineers invented a special app that shows if a potential date is a long-lost relative. The data used to create the app contains information from the last 1,000 years and is taken from an online genealogical database. The slogan of the app is really creative too: “Bump the app before you bump in bed.”