Touchless Voting System with RFID Authentication: An Experimental Study

In modern times, guaranteeing hygiene, security, and efficiency in elections remains a major challenge, especially in large-scale democratic systems. The traditional voting mechanisms based on physical contact, like ballot papers or touch-based voting machines, expose one to risks of contamination and electoral manipulation. This project demonstrates a touchless voting system with Radio Frequency Identification (RFID)-based user authentication aimed at surmounting these constraints using inexpensive and durable hardware. The system is powered by an ESP32 microcontroller and employs an RC522 RFID reader module for contactless verification of the voter’s identity. RFID technology works by remotely reading data on an RFID card to which every registered voter is allocated. When the card is held close to the reader, it sends a unique identifier, which is compared to a secure cloud-based database with voter information like name and address. Once verified successfully, the voter is allowed access to vote using ultrasonic sensors—each sensor representing a particular candidate and act as a switch—facilitating gesture-based interaction for an entirely contactless experience. The system has LEDs for visual acknowledgment and a buzzer for audible feedback when there is successful vote registration. Repeated voting from the same voter is also inhibited by the database through the voter status being updated once a vote has been cast. With real-time cloud connectivity, contactless RFID verification, and touchless input, the system suggested is able to enhance hygiene, security during elections, and ease in voting in today’s election environments.