Wireless Communication's Crystal Ball (image) Fraunhofer-Gesellschaft Share Print E-Mail Caption "Awair" displays when signals are being transmitted and on which frequencies. Credit © Fraunhofer ESK Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.