The German Federal Constitutional Court has ruled that people must be given the option of registering a third gender on birth certificates. The ruling, hailed as a 'small revolution' by activists, makes Germany the first European country to offer intersex people the choice of identifying as neither male nor female. The government now has until the end of 2018 to pass a law specifying a category other than male or female. The case was brought by a registered female whose chromosome test confirmed neither one sex nor the other.