[garrettjoecox]

What 13 year old has a government issued ID?

[gruez]

For the jetsetting 13 year old, a passport. It's not exactly rare, but it's also not common either.

[Symbiote]

Probably the majority of European children have one, or an equally valid national identity card.

But at that age, it's going to be kept somewhere safe by parents. The passport probably costs more than the budget airline holiday flight.