Do fingerprints have a function? July 7, 2020 by Pamela Landy Fingerprints provide traction for your fingers, helping you to grasp things. Related Answers Who was the “Roe” in the Roe v. Wade case? Where did “Dear Abby” and “Ann Landers” get their starts? Do Gargoyles on medieval cathedrals have a practical function? Do identical twins have the same fingerprints? When does a human fetus acquire fingerprints?