Our adult children are in their 50’s, and they were foot printed after birth decades ago to identify them in case of mix ups or worse at the hospital.
Now there is an electronic method used by hospitals, who don’t want to get sued for losing or swapping babies after they are born.
https://www.bioenabletech.com/newborn-baby-foot-identification-solution
Oh yes. Are they assigning SSN’s at birth? I actually don’t know.