Birth certificate
From Tardis Wiki, the free Doctor Who reference
A birth certificate was a human document of identification, and was issued to human beings from the moment of their birth.
In 2008, Toshiko Sato looked for Paul Talbot's birth certificate to confirm that he was human. (PROSE: Monster)
According to the Editor, Satellite Five contained every piece of information within the Fourth Great and Bountiful Human Empire, including birth certificates. (TV: The Long Game)