

Why do you think sex is listed in passports? Do you think it is because it is important to understand the reproductive capabilities of the traveller or is it a data point that corresponds with appearance, like eye color?
I’m trying to imagine a scenario outside maybe immigration where a country a traveler visits would need to know your “biological sex” or “birth sex”.
But what is it for, why have sex on the passport at all? Why is it important to know the “biological sex” of a traveler? Have you been genetically scanned at a border crossing before?