| dc.description.abstract | Keystroke Dynamics has been heavily researched over many years. Despite the large activity there
are few real world implementations using Keystroke Dynamics as an authentication mechanism.
The change in how internet banks are accessed, from using personal computers to using smart
phones, in combination with the increasing burden for people to remember many passwords, has
increased the need for stronger or enhanced authentication mechanisms.
We look at the suitability of using keystroke dynamics as an additional feature to enhance
security of authentication, when using a smart phone having a touch screen as input method.
Both performance issues and security issues are investigated. We are going in depth on keystroke
data analysis, where we look at why some methods perform better than others. The change in
security, as a result of change in the physical/environmental factors are also addressed.
The results show that keystroke dynamics on a smart phone are more resilient against certain
attacks than keystroke dynamics on a personal computer. We proved this by building a device
capable of imitate someone’s typing characteristics, and explained why the same task is difficult
against keystroke dynamics on a smart phone. Further, we got good results from using new
features available from a touch screen, and we also improved the performance of some detectors
using a technique that adapts the standard deviation to skewed distributions. | no_NO |
