Indutivo (image) Dartmouth College Share Print E-Mail Caption Conductive objects input commands to a smartwatch including (a) coin, (b) finger, (c) credit card, and (d) knife. Credit Photo credit: Jun Gong. Usage Restrictions Must Credit Jun Gong/Dartmouth College Share Print E-Mail 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.