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Alina Hang, Alexander De Luca, Katharina Frison, Emanuel von Zezschwitz, Massimo Tedesco, Marcel Kockmann, Heinrich Hussmann
Travel Routes or Geography Facts? An Evaluation of Voice Authentication User Interfaces
In Proceedings of the 14th IFIP TC13 Conference on Human-Computer Interaction (INTERACT 2013). Cape Town, South Africa, September 2-6 2013. (bib)

Fallback authentication based on voice recognition provides several benefits to users. Since it is a biometric method, there are no passwords that have to be remembered. Additionally, the technique can be used remotely with-out the user having to be physically present. We performed stakeholder inter-views and we iteratively designed and evaluated different voice authentication user interfaces with a focus on ease-of-use. The main goal was to keep embar-rassment low and to provide an interaction as natural as possible. Our results show that small changes in the interface can significantly influence the users opinions about the system.