Local and federal law enforcement officers typically submit fingerprints to the FBI's criminal file for every person they arrest on a serious charge, whether or not there is an eventual conviction.
Why do you get fingerprinted?
THE LINE OF WORK YOU CHOOSE
What your potential employer is looking for is honesty in your background, as a fingerprint scan reveals any criminal history you may have. It also confirms your identity by being able to place your date and area of birth and other identifying factors about you.
At what age do you get fingerprints?
These folds eventually cause the surface layers of the skin to fold too, and by the time a fetus is 17 weeks old – about halfway through a pregnancy – its fingerprints are set.