Illustration (IMAGE) Stanford University Caption Engineers at Stanford University have tested how well a prototype exoskeleton system they have developed increased the self-selected walking speed of people in an experimental setting. The mode that was optimized for speed was created through a human-in-the-loop process. Credit Farrin Abbott Usage Restrictions Image may only be used with appropriate caption or credit 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.