Proceedings of the 4th international conference on mobile technology, applications, and systems and the 1st international symposium on Computer human interaction in mobile technology

We are delighted to host this conference back in the beautiful island city of Singapore. Following the success of the Mobility Conference first held in Singapore in 2004, we have had another successful year in Guangzhou, China followed by the last conference in Bangkok, Thailand. Mobility Conference 2007 is a continuous effort to actively promote mobile technology, applications and systems. The conference is seen as an ideal vehicle for bringing together researchers, scientists, engineers, academicians and students all around the world to share the latest updates on new mobile technologies that would shape the next generation of mobile systems and technology platforms. In today's fast expanding and dynamic marketplace, the emergence of mobility technologies has revolutionize our global village. The benefits of mobility are many fold. Mobile technologies made their headway by offering more flexibility to end-users and improve productivity which many businesses have quickly adopted so as to gain and sustain a competitive edge. While mobility technologies and application are clearly becoming an essential integration into part and parcel of our daily life and business strategy, it is utmost important for professionals to stay relevant and equipped with up-to-date technical competencies, in order to meet the competitiveness of the global economy successfully. The concept of this conference is dealing with the new challenges, deployment and strategies on next generation mobile systems, mobile devices and mobile networks in Asia. We aim to promote the understanding and interaction among players, and focus on the key areas in the value-chain necessary for the delivery of total mobile solutions. We also wish to make use of this platform to facilitate discussion and encourage the formulation and adoption of standards to enable rapid development and deployment of mobility solutions. We welcome you all to Singapore. This year's conference received about 150 submissions from almost every part of the world, including North and South Asia, Africa, North and South America, Europe and Oceania. The topics covered by the submissions included a wide range of mobile applications and services as well as the wireless/mobile communications technologies to support them. Despite having multiple conference deadlines around the same period aggressively competing with us for good papers, we are glad to receive high quality submissions which were reviewed by our panel of expert reviewers. Through their dedicated efforts under tight deadlines, we eventually accepted 48 papers for oral presentation and 22 as posters. The technical program provides a good coverage of the latest research and development efforts in mobile applications, systems and technology by the academia as well as the industry. Through our efforts, we hope to address the mobile communications arena from novel research to innovative technology to successful user applications, and hope that your attendance and participation in the conference will lead to further fruitful advancements in your research and social networks.