Yohani Ranasinghe

Visible Light Communication (VLC) is a blooming research area which uses visible light spectrum as the communication channel. Exponential growth of Light Emitting Diodes (LEDs) deployment as a light source is encouraged to use for communication purposes as well. With the introduction of VLC, LED can be used for communication while providing the primary function of illumination. Since location-based network access protocols have not been implemented for Wi-Fi devices, this research has been conducted with the intention of using VLC to perform location-based authentication. In our location authentication protocol, VLC technology is used for authentication purpose and Wi-Fi is used for data transfer once the device has been authenticated. The proposed protocol provides location-based connectivity to Wi-Fi devices with minimum changes to Remote Authentication Dial-In User Service (RADIUS) and Wi-Fi Protected Access 2 (WPA2) protocol by using VLC.

People use reminders to recall tasks to-do. But sophisticated enough tools are unavailable. Context-Awareness in mobile computing is more engaging area in gathering information about the user's current situation and would be ideal to integrate with the reminders to generate context-aware reminder where rich context is used to identify when a reminder should be presented to its recipient. Here we have proposed a model to integrate context-awareness with reminder's decision making process and develop a Context-Aware reminder.

— People use reminders to recall tasks to-do. But sophisticated enough tools are unavailable. Context-Awareness in mobile computing is more engaging area in gathering information about the user's current situation and would be ideal to integrate with the reminders to generate context-aware reminder where rich context is used to identify when a reminder should be presented to its recipient. Here we have proposed a model to integrate context-awareness with reminder's decision making process and develop a Context-Aware reminder. In this research more focus has put on capturing user context using technologies like IoT. Context is captured under five categories; Location, User Activity, User Preference, Identity of the User and Date and Time. Also developed a context representing model and processing context data to infer valuable information in a mobile environment. Then a conceptual framework for a context-aware reminder has presented and finally " RemindMe " , an android app has developed as the proof of concept.

Secure communication is of vital importance in this information age since data has become the most valuable asset. Number of security protocols have been developed to ensure secure data transmission but none of them addresses the issue of secure data transmission to a specific location integrated with low cost and power efficient model. Visible Light Communication (VLC) is an emerging technology that has a promising future since it enables to use the existing lighting infrastructure for data transmission. In this research , we propose a novel protocol for secure bi-directional communication channel establishment which ensures location based data transmission, using the inherent properties of Visible Light Communication technology.