Smart Charging System Using RFID For Secure and Controlled Power Access

Abstract—In an age where electronic device usage is ubiquitous, public and shared charging stations have become essential infrastructure. However, uncontrolled access to these resources often leads to misuse, energy wastage, and maintenance issues. This project responds to these societal needs by developing an RFID-based secure charging system that allows only authorized users to access wired charging ports. The system employs an RFID reader integrated with a microcontroller to authenticate users before activating power supply to the charging outlet. Upon successful verification of an RFID tag, the circuit enables current flow to the device, ensuring a safe, regulated, and user-specific charging experience. This design enhances the utility of wired charging setups in environments like libraries, offices, schools, and public kiosks, where energy control and user accountability are increasingly important. The system emphasizes security, cost-effectiveness, and practical implementation, making it a strong candidate for real-time deployment in modern infrastructure. Keywords—RFID (Radio Frequency Identification), Wired Charging, Microcontroller, Authentication, Relay Control, Power Management, Security System, Access Control,, Embedded System