: Large displays are increasingly being placed in public places to support community and social activities. However, a major problem that has been observed with this new form of pu...
— Today sending spams has turned to be a major problem in the Internet. It is so serious that more than 80% of the transferred emails are spams. As a result, various methods have...
In Ubiquitous Computing Environment (UCE), service provider wants to provide its service to only legitimate users. Some users who belong to same service provider do not want to rev...
Current computer security systems are based on the premise that once a user presents valid credentials to the authentication system (e.g. valid ID and password), they are granted ...
Abstract-- In this paper we propose a distributed authentication service for peer-to-peer (P2P) based massively multiuser virtual environments. Such a service is necessary to provi...
Arno Wacker, Gregor Schiele, Sebastian Schuster, T...