computer circuit connection (IMAGE) Penn State Caption A team of Penn State researchers has developed a new hardware security device that takes advantage of microstructure variations to generate secure keys. Credit Jennifer McCann,Penn State Usage Restrictions non commercial use only 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.