IoT Based Smart and Secured Mobile Charging Station in Public Place

Mobile phones have become an integral part of daily life due to technological advancements. While many developed countries offer public charging facilities, they often lack security measures, particularly in developing nations. This paper proposes a smart and secure mobile phone charging station that can be easily installed anywhere and is compatible with all mobile phone types. The system is centered around an Arduino microcontroller, which interfaces with a coin recognition module to validate inserted coins. Based on the coin value, the system determines the charging duration for the mobile phone. To enhance security, a solenoid door locker controlled by RFID cards is employed, allowing only authorized users to access the charging station. Additionally, features are implemented to facilitate coin collection by system administrators to prevent overloading. The functionality of the system has been verified through prototype testing.