Iceland has a dating app that stops you hooking up with your cousin.

5.Iceland has a dating app that stops you hooking up with your cousin.

   

Unfortunately, Icelanders keep accidentally sleeping with their relatives. 

This is mainly due to 3 reasons:

1. Iceland has a relatively small population (Roughly 320,000).
2. Iceland has very few foreign nationals.
3. Icelandic surnames do not give you much indication of lineage.

If this was a problem for most countries, a good rule of thumb would be to avoid anybody who shares your surname.

However, even siblings in Iceland can have different surnames since your surname would be the first name of your father and whether you were his son or daughter e.g. Svensson (Son of Sven), Svensdottir (Daughter of Sven).

Thankfully, Icelandic citizens can download a dating app called Íslendingabók (Book of Icelanders).

This app will tell you whether you’re related or not by bumping your phones together, saving you the embarrassment of finding out at the next family Christmas dinner.