Prof. Steven Furnell considers the extent to which inherent usability challenges are presented across a range of potential user authentication methods that may be encountered on PCs, web sites, and mobile devices.

The material here is an extract from a wider talk about the usability of security technologies, which was presented at the University of Piraeus in Greece on 10th January 2013. [Released under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 UK: England & Wales licenc