System Design A (image) Dartmouth College Share Print E-Mail Caption Smartphones, fitness bracelets and a custom app form a mobile-sensing system that judges employee performance. Credit Shayan Mirjafari Usage Restrictions No restrictions. Must credit Shayan Mirjafari. 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.