The Age of Fingerprints (IMAGE) Iowa State University Caption Chemists Young-Jin Lee and Paige Hinners may have found a way to determine when a fingerprint was left behind. Credit Photo by Christopher Gannon/Iowa State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.