Picture of the scanning device (IMAGE) University of California - San Diego Caption A handheld device equipped with a suite of sensors to monitor temperature, CO2 and airflow. Credit Carnegie Mellon University Usage Restrictions Please credit if using License Original 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.