SoniControl (IMAGE) St. Poelten University of Applied Sciences Caption This is an ultrasound-firewall for mobile phones. Credit St. Poelten UAS / Matthias Zeppelzauer Usage Restrictions Usage only with appropriate caption or credit. 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.