Today I got my new (German) passport which includes a small but important change of my personal data: now in the field sex it shows 'X' for 'indetermined'. I thought for a long time that it would not really be important what these official documents say. However, I am getting more and more tired and annoyed of always having to choose between two binary options on any form, when I buy something on the web (for example an airplane ticket), and on many other occasions.