What is the purpose of the footprint, I mean really, it cannot be used to identify a person, I never understood that.
Citizenship determined by baby foot print:
...Results indicated that sufficient agreement was found between the infant and adult footprints to allow the U.S. State Department to accept the individual’s identification as a U.S. citizen and approve the application of a U.S. passport....
https://www.ncjrs.gov/App/publications/Abstract.aspx?id=241258