Studying the Data (IMAGE) DOE/Sandia National Laboratories Caption From left to right, Sandia National Laboratories scientists Lauren Rohwer, Kim Butler and Dorina Sava Gallis look at characterizations they have done in the lab for their optical tags project. Credit Craig Fritz, Sandia National Laboratories Usage Restrictions For news reporting purposes only. All other uses must receive express permission from Sandia National Laboratories. License Original 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.