SOUPS
2009
ACM
13 years 11 months ago
2009
ACM
This paper discusses and evaluates two novel multisensory user authentication mechanisms aimed at preventing observation attacks. These mechanisms improve the usability of our pre...
CHI
2009
ACM
13 years 11 months ago
2009
ACM
Authentication in public spaces is a risky task. Frauds on cash machines (ATMs) are not uncommon nowadays. The biggest group of attacks is observation attacks, which focus on reco...
CHI
2008
ACM
14 years 5 months ago
2008
ACM
A number of recent scams and security attacks (phishing, spyware, fake terminals, ...) hinge on a crook's ability to observe user behavior. In this paper, we describe the des...