# Smartwatch-Based Monitoring and Alert System for Factory Operators Using Public Cloud Services
## 3 Materials and Methods  
The proposed solution is a monitoring and notification system for factory operators using smartwatches. This system aims to improve communication between employees while enhancing their performance and efficiency during working hours. At its core, the system utilizes smartwatches to maintain a constant, immediate connection between workers, while the server centralizes data management and provides secure, rapid access to critical information. Complementing this infrastructure are two applications, a web application and a smartwatch application, each tailored to meet distinct operational needs.  
In order for the proposed solution to be viable and effective, identifying the functional requirements of the entire system was a necessity. These requirements represent the key elements that the proposed system must fulfil to solve communication and monitoring challenges in a factory environment. Based on an analysis of factory-specific operational challenges, the following key functional requirements have been identified:  
* **Real-time data processing and analysis:** The system must collect and process data in real time to provide useful insights for quick decision-making.
* **User authentication and authorization:** To ensure secure access, the system must allow authentication and authorization for users across both the web platform and smartwatches.
* **User management:** The system must provide the option of managing the user accounts of employees, as these would be used for authentication on both the web and smartwatch applications.
* **Operator activity monitoring:** Continuous monitoring of operators' activity through their tasks is required to evaluate their real-time performance.
* **Notification management:** The system must enable sending and receiving notifications to facilitate communication between employees.
* **Task list management:** Supervisors should be able to add, modify, or remove tasks from their operators' task lists for better workflow organization.  
* **Work hours recording:** The system should automate time tracking to accurately record the number of hours worked by each employee.  
The selected requirements shape a comprehensive solution, drawing from research on digital transformation in factories and industrial automation. This research underscores the importance of these functionalities in optimizing workflows and enhancing productivity, particularly in facilitating human-to-human interaction.  
To meet these requirements, the system architecture is strategically divided into three interconnected components: the server, the web application, and the smartwatch application. The server is responsible for processing and analyzing real-time data, facilitating communication with the web application, handling user authentication and authorization, and managing notifications. The web application serves three key roles: enabling administrators to configure and oversee employee accounts, allowing supervisors to monitor their team's activities and performance in real time, and supporting user authentication for smartwatch access. Meanwhile, the smartwatch application delivers alerts and notifications directly to employees' devices, along with details of assigned tasks that need to be completed.  
Table 1 presents a concise overview of the system's primary functional requirements along with a brief description of each requirement and the specific architectural components or technologies responsible for addressing them. This table serves as a bridge between the identified needs of the system and the technical design choices.  
The system is designed to be robust and scalable, easily adapting to changes in the production environment and to the growing number of employees, serving as a starting point for customization according to the specific needs and requirements of factories that may want to implement it. In terms of applicability, the system is strictly software-based, utilizing existing hardware available on the market, specifically smartwatches.