Matthias Zeppelzauer is a senior researcher at the Institute of Creative\Media/Technologies at St. Pölten University of Applied Sciences (Austria) since 2013. He received his PhD in Computer Science from Vienna University of Technology in 2011 with highest distinction. His research focuses on multimedia signal processing and machine learning. He is an active member of the research community and acts as a reviewer for numerous high-impact conferences and journals. Matthias received several performance scholarships from the Vienna University of Technology and was awarded by the Austrian Computer Society for outstanding achievements in the area of pattern recognition. He is currently leading the NetIdee Project "SoniControl" which focuses on the development of a privacy preserving app for mobile devices that notifies and blocks ultrasonic tracking information. Recently, he got a second NetIdee Project "SoniTalk" funded which is focusing on the establishment of a secure and privacy-oriented protocol for ultrasonic communication.