Furthermore, the SIM card detection tool is an important feature in case of a stolen mobile phone.
III. APPLICATION DEVELOPMENT In this section, we will discuss the requirements of the mTracker tool, the application architecture and the technologies required for its deployment. Our emphasis will be on existing architectures, as well as emerging ones that foster its practical deployment. A. System Requirements A mobile application has specific requirements that mTracker also cope with. According to ubiquitous computing principles, the user interface must be as easy to use as possible, with minimal input from the user. Screen size and orientation together with stylus input minimization dictate an interface with large buttons and appropriate font size that enable on-the-move application use. Figure 1 shows the mTracker requirements.