This project is an Arduino-based password entry system that uses a 4x4 keypad for input and a 16x2 I2C LCD display to show messages. The system allows users to input a password, which is then ...

This project presents the design and implementation of a secure and user-friendly RFID and keypad-based door lock system using Arduino The system integrates two authentication methods: RFID (Radio ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

A secure electronic voting system with real-time authentication and keypad enables accurate, tamper-proof voting through ...