Proposed Control Device (image) Human Factors and Ergonomics Society Caption This is a sketch of the proposed control device. Credit Rene Guerster Usage Restrictions These photos may not otherwise be reproduced, distributed, cropped, resized, or otherwise altered without the written permission of the photographer. No commercial use of these photos may be made in any way. 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.