Johannes Vollmer was a Junior Researcher at the Center for Human-Computer Interaction. During his employment he supported the research team Computer Supported Cooperation doing research in the field of AAL while his main task area was located in the ProMe project. He holds a Bachelor’s Degree (B. Sc.) in Media Computer Science from the University of Applied Sciences Kaiserslautern and is enrolled in the Master’s programme Computer Science at the University of Salzburg. Currently he is pursuing his Master’s thesis on the impact of Usable Security on user’s trust in intercom systems.