secure and usable p2p voip for mobile devices
The use of Voice over IP (VoIP) applications involves a number of security threats and usability issues, leading to possible breaches of security and privacy. With the adoption of future peer-to-peer communication systems, the challenges grow even more as we rely on untrusted peers to access the service. We are developing a peer-to-peer VoIP system which features techniques for improving the security and privacy of users in future networks. However, as the threats are seldom well understood, presenting them in a usable manner is problematic. Implemented on a mobile device, the small user interface provides additional challenges for the end user. Via interviews, a questionnaire and usability testing, we seek to improve both the usability of managing and understanding the additional security, as well as the overall user experience of the emerging application.
voip peer-to-peer user study usable security