Collaborative web browsing tasks occur frequently, such as one user showing another how to use a web site, several users working together on a search task, or even one user sendin...
This paper presents how ad-hoc co-located collaborations can be supported with an arbitrary number of users that only have acces to small-size mobile displays. Our approach is bas...
In this paper, we propose a universal solution to web search and web browsing on handheld devices for visually impaired people. For this purpose, we propose (1) to automatically c...
Mobile devices are currently difficult to customize for the usability needs of elderly users. The elderly are instead referred to specially designed “senior phones” or softwar...
Abstract—A person usually carries multiple authentication tokens in the form of various cards to access services electronically. Often the service outlets are equipped with a str...