AFAIK, many governments use name+surname+DOB as the unique identifier for a person, E.G. when looking up somebody who doesn't have any documents on them, or ini

AFAIK, many governments use name+surname+DOB as the unique identifier for a person, E.G. when looking up somebody who doesn't have any documents on them, or initiating a document recovery process if you've been robbed and don't remember anything else.