Xing-Dong Yang, Dartmouth College (IMAGE) Dartmouth College Caption Xing-Dong Yang, an assistant professor of computer science at Dartmouth College, and his collaborators have unveiled a prototype of a smartwatch with dual touchscreens called Doppio. Credit Dartmouth College Usage Restrictions Credit Dartmouth College 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.