How does a fingerprint/background check stop a person from becoming a driver just so he can rape his first fare, then quit? You're basically asking, how does X

How does a fingerprint/background check stop a person from becoming a driver just so he can rape his first fare, then quit? You're basically asking, how does X prevent a person from being a rapist? Answer: nothing can "prevent" rapists and murderers. they exist regardless of precautions, and the word "prevention" is overused. background checks, and fingerprints do nothing to prevent creeps.