IoT-Based Emergency Notification System for Physically-Challenged Individuals

This study aimed to design and develop an IoTbased Emergency Notification System for physically challenged individuals, such as senior citizens and persons with disabilities. The device used an Arduino Nano, a push button, and a GSM module as its primary components, sending SMS notifications to recipient mobile devices. Simulations were conducted on the device prototype to determine its performance in sending and receiving SMS notifications to the recipients. The independent variables were time of day (morning and afternoon) and receiver location (same location as the wearer of the device and different locations from the wearer). The dependent variable was the time to receive the SMS notifications. Moreover, the interface design of the developed system was evaluated for usability by 50 evaluators. The mean and the Mann-Whitney U test statistics were used to analyze the data. The results of the study showed that there was no significant difference in time of day. However, a significant difference was found in the receivers' locations. Those who were in the same location as the wearer of the device were able to receive the emergency notifications promptly, as compared to those who were in different locations. The usability of the system interface was perceived as very good. The system prototype has the potential for commercialization.