Preparing a tamper-indicating device (IMAGE) DOE/Sandia National Laboratories Caption Sandia National Laboratories materials chemist Cody Corbin works in a glove box, preparing a container filled with bead bits that will turn brown if someone attempts to tamper with the container’s contents. Credit Photo by Craig Fritz/Sandia National Laboratories Usage Restrictions Non-commercial and news usage with credit 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.