Shoe Scanner Technology (IMAGE) DOE/Pacific Northwest National Laboratory Caption The shoe scanner builds on millimeter wave technology used in passenger scanners deployed at airports to detect concealed weapons. Credit Photo by Andrea Starr | Pacific Northwest National Laboratory 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.