The primary mode of interaction with a smartphone is limited to the front-facing touchscreen and several physical buttons along the sides. This project will extend the input modality of a smartphone with built-in sensors (microphone, gyroscope, and accelerometer etc.). We will firstly introduce the prototype BackTap, adding four distinct tap locations on the back case of a smartphone. The BackT...

The smoothness of human–smartphone interaction directly influences users experience and affects their purchase decisions. A commonly used method to improve user interaction of smartphones is to optimize the CPU scheduler. However, optimizing the CPU scheduler requires a modification of operating system. In addition, the improvement of the smoothness of human–smartphone interaction may be limite...

In this research, the diffusion of innovation regarding smartphone usage is analysed through a consumer behaviour theory. This research aims to determine whether a pattern surrounding the diffusion of innovation exists. As a methodology, an empirical study of the switch from a conventional cell phone to a smartphone was performed. Specifically, a questionnaire survey was completed by general co...

The face recognition algorithm has been investigated as a robust solution for biometric authentication. It is used in a wide range of applications such as surveillance, access control, airport immigration system and application of user recognition in a smartphone, etc. (The security of face recognition system can be trusted, because they were used unique biometric data) Face recognition system ...

BACKGROUND Recently, the number of ambulance dispatches has been increasing in Japan, and it is therefore difficult for hospitals to accept emergency patients smoothly and appropriately because of the limited hospital capacity. To facilitate the process of requesting patient transport and hospital acceptance, an emergency information system using information technology (IT) has been built and i...

The fields of navigation and motion inference have rapidly been transformed by advances in computing, connectivity, and sensor design. As a result, unprecedented amounts of data are today being collected by cheap and small navigation sensors residing in our surroundings. Often, these sensors will be embedded into personal mobile devices such as smartphones and tablets. To transform the collecte...

The increasing availability of the smartphones on one hand and the necessity to improve healthcare on the other hand, are encouraging the development of smartphone healthcare applications. In this paper an idea of transforming the smartphone into a healthcare device capable of recognizing everyday activities and detection of fall events is presented. This approach firstly use inertial sensors d...

Many applications tend to allow automated login by storing passwords/cookies on the smartphone. As an alternative, recently there have been efforts to fingerprint devices for identification and authentication [2]. Towards that end, we explore whether it is possible to fingerprint a smartphone using its built-in hardware sensors such as accelerometers. Smartphone accelerometers are based on Micr...

Since 2008, multiple smartphone platforms have launched versions of “app stores”, marketplaces where consumers can purchase and download software applications for their smartphone. This paper provides evidence for both demand and supply of “apps” using data on the size and composition of smartphone user bases and of the apps available for competing platforms. Results from the estimation of a st...

Smartphone application usage impacts users’ privacy. However, due to the lack of an appropriate level of insight into sensitive information processing, users are not in the position to assess the extent of impact. In this paper, we propose an information-flow monitoring and privacy awareness-raising system that provides users with comprehensible information on how their privacy is impacted by l...