Communication devices aim to provide a multimedia service without spatial or temporal limitations in an IP-based environment. However, it is incapable of allowing for fair use by consumers who legally buy content, and damages provider contents through the indiscriminate distribution and use of illegal contents. The DRM system that emerged to solve this problem cannot protect licenses stored on ...

In this paper, we propose a lightweight mechanism to isolate one or more Android userland instances from a trustworthy and secure entity. This entity controls and manages the Android instances and provides an interface for remote administration and management of the device and its software. Our approach includes several security extensions for secure network access, integrity protection of data...

Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China University of Portsmouth, Faculty of Science, SE...

Radio-frequency tokens are vulnerable to eavesdropping. Several schemes have been proposed that use additional devices to generate cover noise, or bit collisions, in order to protect communication between a reader and a token. I discuss the practical weaknesses in current bit-blocking schemes and propose an alternative implementation where the tokens modulate their reply onto a noisy carrier pr...

The resonant elements that grant metamaterials their distinct properties have the fundamental limitation of restricting their useable frequency bandwidth. The development of frequency-agile metamaterials has helped to alleviate these bandwidth restrictions by allowing real-time tuning of the metamaterial frequency response. We demonstrate electrically controlled persistent frequency tuning of a...

Polymer materials have been used for electronic, optical and bio micro/nano devices. Polymer device fabrication technologies based on replication methods including hot embossing (Becker & Heim, 2000; Park et al., 2003; Shinohara et al., 2007b), injection molding (Becker et al., 1986; Svedberg et al., 2003), ultraviolet (UV) imprinting (Haisma et al., 1996; Kawaguchi et al., 2007; Shinohara et a...

Completion of the human genome has resulted in a paradigm shift in the way biological queries are addressed today. Things that were considered far-fetched only a few years ago, such as personalized medicines, seem to be within our reach. New informatics and research tools have been devised to handle and analyze the influx of a huge amount of data, such as gene chips and microarrays or newly int...

The requirements of computer games by means of CPU and graphics performance are continuously growing. At the same time many low cost and modest performance CE devices are gaining popularity. People are already used to mobile life style inside home and on the go and want to enjoy entertainment everywhere. This paper describes a novel gaming system, called Games@Large, which enables heavy PC game...